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Telescope Uhtc

December 1st, 2009 admin Comments off


Telescope Uhtc

SO) MEADE ETX-90PE W/UHTC SO) MEADE ETX-90PE W/UHTC

Sale Price: $499.95

 

Description

SO) MEADE ETX-90PE W/UHTC

Telescope Uhtc

 

The first telescope for me?

I want a 6" telescope that can see nebulas and star clusters, i was wondering if somebody could help me find one for me, i've looked at some but am not positive if it'll be good.

This is the one i was thinking of,

http://www.opticsplanet.net/meade-lxd75-sn-6at-schmidt-newtonian-telescope-with-uhtc.html

thank you

I would like to suggest that you join a local astronomy club or astronomical society BEFORE you spend your money on a scope. There are many different kinds of scopes and what is perfect for one person is not perfect for another. Everyone has their own set of eyeballs and no two are the same. If you join a club, you can attend a few of their star parties and try out members scopes to see what works best for YOU, before you buy a scope. The members can also help you when you get your scope and show you how to get the most out of your new scope as well as to help teach you where the treasures in the sky are located. Most clubs have loaner scopes and extensive libraries that you can gather more information from too. Most clubs will have monthly membership meetings with informative presentations given by members and by guest speakers. You can really learn a lot from these clubs and an added plus is all the great new friends you make there too. Go to this site to find a club in your area. http://www.astroleague.org/societies/list
This only has clubs that belong to the National Astronomy League, so there are many more which do not appear on this list. Continue searching google if you don't see one in your area here.

There are several different kinds of telescopes and all of them have some excellent features. Refractors and Reflectors, plus Schmidt-Cassegrain, APO refractors, Mac-Cass, and many more. There are also several mounts to chose from and the mounts are just as important, if not even more important, than the scope is. All of the different scopes and mounts have some features that some people like and do not like. No two eyeballs are the same and the perfect scope for one person might be completely wrong for another person.

There is no one scope that is "better" than another ---except for the junk scopes out there which are all just a waste of money. Never, ever buy from Walmart, Costco, Target, or any other discount store like that. Junk scopes are flooded into the market from those stores. You will be buying nothing but bad optics and plastic.

If you are new at this, then stay away from anything used from any site. If you don't know what you are buying and who you are buying from you will most likely be getting someone else's headache---with no warranty either. Some great deals on used equipment are out there, by people who know how to use and take care of scopes, but if you don't know what you are doing, you might be spending a lot of money on worthless junk. One improper cleaning can destroy a scope. Buyer Beware.

I recommend: http://oriontelescopes.com/

Orion is the very best for value and for customer service too. I have 3 of their scopes and I will only buy from them from now on. My first scope was a manual controlled scope and I am very glad that it was because it forced me to learn where things are in the night skies. Go-To type scopes can be frustrating to use. If you do not have them aligned exactly perfect, they do not find the targets. If you are a beginner, you will be frustrated unless you spring for a GPS Go-To. An object locator is just that---it will locate objects for you (must be aligned first) but an object locator is not a tracking motor. It will not keep the scope on the target.

The Orion site has some excellent diagrams and explanations of all types of scopes and mounts.

Things to consider are size--can the user lift and transport the scope to the viewing site easily? Does it fit in your car? If not, then it will gather dust in a closet. I recommend a carrying case too so it is protected in storage and transport. Can the viewer reach all the knobs and buttons? I have a long tube large manual refractor and it is very difficult for me to reach the knobs when I am pointed to Zenith. I am not a tall person.

Take your time in making your decision.

Some people will suggest that you purchase binoculars. Not a bad idea but don't buy anything less than 10x50 and you must have a tripod too or you will not be happy with your astronomical views because they will be too shaky from your movements. Even your pulse will make them shake. Personally, I prefer a scope to binos because if binoculars are not aligned properly at the factory, then you get double images and distortions that can't be fixed. Most of the cheaper binoculars are not properly aligned. That is not as important for terrestial viewing, but it is a killer for astronomical viewing. Binos can also be bumped out of alignment and become useless for astronomy.

When you buy, go Orion and you wont be disappointed. Don't try to learn everything all at once or you will be overwhelmed and discouraged. Patience is the key to Astronomy.

You will need a good star chart program too.

http://www.stellarium.org/

This is great freeware that you can download. Tell it where you are and it will tell you what you see. Ask it where something is and it will show you.

I wish you all the best! Enjoy!

Edit: Meade used to be a great scope maker but they have had a lot of problems the past few years and they are now known to be VERY POOR with customer service after a sale. If you don't get a perfect scope to begin with, they won't help you fix problems.

Meade 10 LX200 ACF f 10 Advanced Coma Free Telescope with UHTC 1010 60 03
Meade 10 LX200 ACF f 10 Advanced Coma Free Telescope with UHTC 1010 60 03
Paypal   US $3,499.00
Meade LX200 ACF 8 inch f 10 Advanced Coma Free Telescope w UHTC
Meade LX200 ACF 8 inch f 10 Advanced Coma Free Telescope w UHTC
Paypal   US $2,495.95
Meade 10 LX200 ACF Computerized Telescope with UHTC Coatings 1010 60 03
Meade 10 LX200 ACF Computerized Telescope with UHTC Coatings 1010 60 03
Paypal   US $3,499.00
Meade 12 LX90 ACF Computerized Telescope with UHTC Coatings 1210 90 03
Meade 12 LX90 ACF Computerized Telescope with UHTC Coatings 1210 90 03
Paypal   US $3,299.00
Meade 14 LX200 ACF Computerized Telescope with UHTC Coatings 1410 60 03
Meade 14 LX200 ACF Computerized Telescope with UHTC Coatings 1410 60 03
Paypal   US $6,499.00
TELESCOPE MEADE LX90 LNT UHTC
TELESCOPE MEADE LX90 LNT UHTC
Paypal   US $1,500.00
Meade 8 LX200 ACF f 10 Advanced Coma Free Telescope with UHTC 0810 60 03
Meade 8 LX200 ACF f 10 Advanced Coma Free Telescope with UHTC 0810 60 03
Paypal   US $2,499.00
Meade 10in LX90 ACF F 10 UHTC Telescope NEW
Meade 10in LX90 ACF F 10 UHTC Telescope NEW
Paypal   US $2,595.00
Meade 8 LX200 ACF UHTC Advanced Coma Free Astronomical Telescope 0810 60 03
Meade 8 LX200 ACF UHTC Advanced Coma Free Astronomical Telescope 0810 60 03
Paypal   US $2,399.00
Meade 8 LX90 ACF F 10 Advanced ComaFree UHTC Telescope
Meade 8 LX90 ACF F 10 Advanced ComaFree UHTC Telescope
Paypal   US $1,895.00
Meade LS 6 SC f 10 GPS UHTC Schmidt Cassegr​ain Telescope
Meade LS 6 SC f 10 GPS UHTC Schmidt Cassegr​ain Telescope
Paypal   US $850.00
Meade 10 LX200GPS Schmidt Cassegrain Telescope w UHTC Autostar Controller
Meade 10 LX200GPS Schmidt Cassegrain Telescope w UHTC Autostar Controller
Paypal   US $3,885.00
Meade 8-Inch LX90-ACF (f/10) Advanced Coma-Free Telescope Meade 8-Inch LX90-ACF (f/10) Advanced Coma-Free Telescope

List Price: $1,999.00
Sale Price: $1,954.95
You save: $44.05 (2%)

 

Description

The Meade 8" LX90-ACF Advanced Coma-Free (ACF) optical system takes all of the features of the Meade SC models and then ups the ante. With it's technologically superior optical design, ACF gives a flatter, coma-free field of view with pinpoint images all the way to the edge of the field, rivaling Ritchey-Cretien performance at a fraction of the cost. ACF is the perfect solution for the serious astroimager or visual astronomer looking for observatory-class optics.

Features

  • GPS - LX90 can do more than track satellites. It talks to them as well. Turn it on and the built-in Sony GPS sensor immediately determines your precise date, time and location. AutoAlign then uses this info to align your scope for a tour of the most spectacular sights in the universe.
  • Easy align - LX90s are smart scopes that know the night sky right out of the box. Easy Align picks two alignment stars for you and places them right in your viewfinder. Just center them to fine tune your alignment and the wonders of the universe are at your fingertips.
  • Oversized primary mirror - Meade manufactures their primary mirrors in diameters larger than their listed aperture (e.g. the dia. of 8" LX90's primary mirror is actually 8.25"). This additional 1/4" yields a wider, fully illuminated FOV & allows you to see the light other telescopes leave behind.
  • 8 x 50 viewfinder - Quickly and easily locate and center deep sky objects.
  • Slew speed - The LX90 slews (moves) from star to star at 7 degrees per second. That is more than twice as fast as the competition. This means that over the course of an evening, a Meade LX90 will show you two to three times more objects.
Meade ETX-125AT (f/15) Maksutov-Cassegrain Telescope Meade ETX-125AT (f/15) Maksutov-Cassegrain Telescope

Sale Price: $699.00

 

Description

This product has been discontinued and is no longer avaiable from the manufacturerA better alternative to the Meade ETX 125 is the Celestron NexStar 5SE for $599 Plus $100 In Free Eyepieces]:popup=http://www.highpointscientific.com/product/CEL-11036/Celestron-NexStar-5SE-Schmidt-Cassegrain-Computerized-Telescope-11036.html]or the [[Celestron NexStar 6SE for $699 Plus $100 In Free EyepiecesWith the Celestron NexStar 6SE you get a 6" Telescope for the same price as the 5" ETX 125 Plus $100 in Free Eyepieces. Check it out, it's worth the look!This Meade ETX 125 comes with an exclusive Celestron NexStar Eyepiece Kit from High Point Scientific. Free Goods Include: Meade ETX 125 Telescope - 0515-03-60 Meade's world famous ETX. The ETX-125AT Maksutov-Cassegrain w/UHTC offers optical quality that has made it a standard in the industry, Meade's best optical coatings, an easy to use Meade 497 GOTO computer handbox, and a solid mount and tripod. If you are in looking for a high quality portable scope absolutely loaded with features and performance you need look no further. Includes instructional DVD.The Meade ETX-125AT telescope features an advanced Maksutov-Cassegrain design for pinpoint star images and extraordinary contrast, making it a great deep sky performer and ideal for detailed lunar and planetary observation as it easily soars to high magnifications. This 125mm (5.0") model has a focal length of 1900mm (f/15) with Meade's best Ultra-High Transmission Coatings (UHTC).Electronics include the Meade #497 AutoStar keypad with over 30,000 object library, periodic error correction, and easy to use red dot viewfinder with adjustable brightness control and blink controlled from the keypad. The Autostar may be linked to a PC using an optionally available software and cable connector set, allowing the telesc

Features

  • The Meade AutoStar controller helps you quickly find and GoTo over 30,000 objects.
  • Constructed of strong, lightweight steel, the full length Meade #884 Deluxe Field Tripod.
  • Features Maksutov-Cassegrain optical system.
  • Ultra High Transmission Coatings optimize the visual, photographic and CCD imaging.
Meade 8-Inch LX200-ACF (f/10) Advanced Coma-Free Telescope Meade 8-Inch LX200-ACF (f/10) Advanced Coma-Free Telescope

List Price: $2,599.00
Sale Price: $2,399.00
You save: $200.00 (8%)

 

Description

The Meade 8" (203mm) f/10 LX200-ACF Advanced Coma-Free Telescope includes all the field-proven features of the LX200 including GPS, Primary Mirror Lock, Oversized Primary Mirror, SmartDrive; Smart Mount, AutoStar II and more. It features a radical new Advanced Coma Free design by combining a hyperbolic secondary mirror with a corrector-lens-and-spherical-primary-mirror combination that performs as one hyperbolic element.

Features

  • LX-200 Telescope
SO) MEADE ETX-90PE W/UHTC SO) MEADE ETX-90PE W/UHTC

Sale Price: $499.95

 

Description

SO) MEADE ETX-90PE W/UHTC

Meade LX200-ACF 8 inch (f/10) Advanced Coma-Free Telescope w/UHTC Meade LX200-ACF 8 inch (f/10) Advanced Coma-Free Telescope w/UHTC

List Price: $4,049.00
Sale Price: $2,799.00
You save: $1,250.00 (31%)

 

Description

 **Open Box** The most widely used research telescope on earth now comes with the most advanced optical system. Meade?s LX200-ACF brings Advanced Coma-Free (ACF) optics within reach of aspiring astronomers everywhere. Nearly every observatory reflector in the world uses an aplanatic (coma-free) optical system like the Ritchey-Chr?tien (RC), including NASA's Hubble Space Telescope. Now you can own similar optics to what the professionals use. The LX200-ACF includes all the field-proven features of the LX200 including GPS, Primary Mirror Lock, Zero Image-Shift Microfocuser, Oversized Primary Mirror, SmartDrive, Smart Mount, AutoStar II and more. Plus, the LX200-ACF comes with observatory-class optics and a Series 5000 26mm 5-Element Pl?ssl eyepiece. The new LX200-ACF. It?s the biggest news in astronomy since, well, the LX200. The advanced in Advanced Coma-Free.A traditional Ritchey-Chr?tien (RC) is a type of reflector that delivers a coma-free, flat field of view via hyperbolic primary and secondary mirrors. RC telescopes (from a variety of manufacturers) are found in most of the world?s top observatories and NASA's Hubble Space Telescope. Because the mirrors in these telescopes have always been very expensive to make, few amateur astronomers could enjoy them. Fortunately, Meade engineers developed a radical new Advanced Coma Free design by combining a hyperbolic secondary mirror with a corrector-lens-and-spherical-primary-mirror combination that performs as one hyperbolic element. This ACF design produces a coma-free, flat field of view that rivals traditional RC telescopes at a fraction of the cost. The design even eliminates diffraction spikes and improves astigmatism, both of which are inherent in the traditional RC design. When reviewing Meade?s LX400-ACF Advanced Coma Free, Sky and Telescope magazine said, [It] does indeed perform like a [Ritchey-Chr?tien]. The difference between the off-axis images (compared to a Schmidt-Cassegr...

Meade 16-Inch LX200-ACF (f/10) Advanced Coma-Free Telescope with EQ Pier Meade 16-Inch LX200-ACF (f/10) Advanced Coma-Free Telescope with EQ Pier

Sale Price: $16,499.00

 

Description

Meade 16in LX200-ACF Advanced Coma-Free Telescope w/EQ Pier w/ UHTC 1610-60-02EQ

Telescope Uhtc

konus telescope

October 14th, 2009 admin Comments off


konus telescope

KonuSpace - 4 Junior Telescope KonuSpace - 4 Junior Telescope

Sale Price: $42.99

 

Description

50mm (1.9") Telescope & Zoom Spotting Scope with Table Tripod -- What could be more convenient than two viewing instruments in one! The 100x telescope for astronomical use has two eyepieces included- 100x and 48x. -- The 28x zoom spotting scope for terrestrial use features a zoom eyepiece with 6x to 28x magnifications. -- The table tripod makes moving around easy for young users, and the set now includes Skywatch astronomy software (windows based). -- Constructed with a Galilean lens system, it is able to produce good images with a nice degree of detail and contrast for a starter scope. A great gift for kids. The KonuSpace -4 can also be used for terrestrail viewing. -- Includes 90 degrees diagonal mirror. Focal length equals 600mm and focal ratio f/12. -- Designed for children over 8 years old. Adult supervision recommended. -- --

konus telescope

 

I'd like to buy a telescope.What about a KONUS SUPER 150, D150 FOCAL LENGTH 1000M?

You can do much better. Konus is making poor quality optics now.

There are several different kinds of telescopes and all of them have some excellent features. Refractors and Reflectors, plus Schmidt-Cassegrain, APO refractors and more. There are also several mounts to chose from and the mounts are just as important as the scope is. All of the different scopes and mounts have some features that some people like and do not like.

There is no one scope that is "better" than another except for the junk scopes out there which are all just a waste of money. Never, ever buy from Walmart, Costco, Target, or any other discount store like that. Junk scopes are flooded into the market from those stores. You will be buying nothing but bad optics and plastic.
______________________________________...

http://oriontelescopes.com/

Orion is the very best for value and for customer service too. I have 2 of their scopes and I will only buy from them from now on.

The Orion site has some excellent diagrams and explanations of all types of scopes and mounts.

Things to consider are size--can the user lift and transport the scope to the viewing site easily? If not, then it will gather dust in a closet. Can the viewer reach all the knobs and buttons? I have a long tube large manual refractor and it is very dificult for me to reach the knobs when I am pointed to Zenith. I am not a tall person.

Take your time in making your decision.

I would like to suggest that you join a local astronomy club or astronomical society BEFORE you spend your money on a scope. There are many different kinds of scopes and what is perfect for one person is not perfect for another. Everyone has their own set of eyeballs and no two are the same. If you join a club, you can attend a few of their star parties and try out members scopes to see what works best for YOU, before you buy a scope. The members can also help you when you get your scope and show you how to get the most out of your new scope as well as to help teach you where the treasures in the sky are located. Most clubs have loaner scopes and extensive libraries that you can gather more information from too. Most clubs will have monthly membership meetings with informative presentations given by members and by guest speakers. You can really learn a lot from these clubs and an added plus is all the great new freinds you make there too.

Some people will suggest that you purchase binnoculars. Not a bad idea but dont buy anything less than 10x50 and you must have a tripod too or you will not be happy with your astronomical views because they will be too shakey from your movements. Personally, I prefer a scope to binos because if binoculars are not aligned properly at the factory, then you get double images and distortions that cant be fixed. Most of the cheaper binoculars are not properly aligned. That is not as important for terrestial viewing but it is a killer for astronomical viewing.

But when you buy go Orion and you wont be disappointed. Don't try to learn everything all at once or you will be overwhelmed and discouraged. Patience is the key to Astronomy.

You will also need a good star chart program.

http://www.stellarium.org/

This is great freeware that you can download. Just tell it where you are and it will tell you what you see.

I wish you all the best. Enjoy

Konus Konusmotor Electronic 500 Newton 114mm 45 Telescope 1781 Telescopes
Konus Konusmotor Electronic 500 Newton 114mm 45 Telescope 1781 Telescopes
Paypal   US $159.95
Konus 60x900mm Konuspace 7 Telescope 1744 Telescopes
Konus 60x900mm Konuspace 7 Telescope 1744 Telescopes
Paypal   US $98.99
Konus Konustart 900 Telescope 1741 Telescopes
Konus Konustart 900 Telescope 1741 Telescopes
Paypal   US $129.99
Konus Konuspace 5 Telescope 1731 Telescopes
Konus Konuspace 5 Telescope 1731 Telescopes
Paypal   US $48.99
Konus Konusmotor 70 70mm 27 Refractor Telescope 1782 Telescopes
Konus Konusmotor 70 70mm 27 Refractor Telescope 1782 Telescopes
Paypal   US $139.99
Konus Digimax 90 Telescope 1770 Telescopes
Konus Digimax 90 Telescope 1770 Telescopes
Paypal   US $359.99
Konus MOTORMAX 90HM 90mm Refractor Telescope NEW in BOX
Konus MOTORMAX 90HM 90mm Refractor Telescope NEW in BOX
Paypal   US $260.00
Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope

List Price: $19.00
Sale Price: $7.22
You save: $11.78 (62%)

 

Description

Lightweight and portable, the Carson MM-200 MicroMax pocket microscope is ideal for on-the-go science. The MicroMax offers a powerful 60 to 100x magnification range, making it easy to examine blood samples, bugs, and anything else that's worthy of a closer look. The microscope also includes a built-in LED light that provides a bright, clear image, along with a rubberized eyepiece for comfortable viewing. Best of all, the MicroMax fits conveniently in a jacket pocket, so you can bring it along wherever you go--whether it's a school field trip or a visit to a friend's house. Specifications Magnification: 60 to 100x Batteries: 3 SG3 button cell (included) Dimensions: 1.25 by 3.25 by 0.75 inches (W x H x D) Weight: 1.1 ounces

CARSON MM-200 MICROMAX LEDTM 60X-100X POCKET MICROSCOPE

Features

  • LED lighted
  • Runs on 3 SG3 Button Cell Batteries (Included)
  • Power and zoom controls
  • weighs 7.2 ounce
Barska BlackBlackhawk 20-60x60 Waterproof Straight Spotting Scope w/Tripod, Soft Carry Case & Premium Hard Case Barska BlackBlackhawk 20-60x60 Waterproof Straight Spotting Scope w/Tripod, Soft Carry Case & Premium Hard Case

List Price: $251.90
Sale Price: $109.98
You save: $141.92 (56%)

 

Description

Barska 20 - 60x60 mm Waterproof Blackhawk Spotting Scope. Big name quality, big time VALUE! Cheap equipment just doesn't cut it. But the Barska Blackhawk 20-60x60 mm Spotting Scope gives you a great price on full-function features you'd normally pay BIG bucks to get. Engineered with unsurpassed optical performance and durability by those who understand the harsh hunting conditions scopes have to endure. Designed for the discriminating hunters who demand only the best, this Blackhawk is the best value in its class. Zoom in on the features: Big 60 mm objective increases light gathering ability for brighter images in low-light conditions; Multi-coated optics maximize light transmission for superior brightness and clarity; Powerful zoom provides 20-60x magnification; 91-45 ft F.O.V. @ 1,000 yds.... close focus: 23 ft; Complete waterproof protection is ideal for all-weather conditions; Long 18-15 mm eye relief and flip-down eyecups are perfect for glasses and non-glasses wearers alike; Glare-reducing sunshade included; Rubber armor designed to protect and absorb shock; Quality pan-head tripod; Premium hard carry case included, plus soft-side case; Approx. 15", 2 3/4 lb.; Spot your target without killing your budget. Order Today! Barska 20-60x60 mm Waterproof Blackhawk Spotting Scope

The Barska Blackhawk 60mm spotting scope is a terrific value because it offers very good optical performance in a compact and affordable package. The scope itself features waterproof design, multicoated optics, and a zoom eyepiece with magnification ranging from 20X up to 60X. The accessories include a light weight table-top tripod, a soft caring case, and a durable hard shell case that will allow the rubber armored scope to stand up to a lifetime of use. The Blackhawk 60mm spotting scope uses a multi-coated objective lens and rugged porro-prism design for bright, clear images. At 100 yards, I can clearly focus in on a target, even when I crank the magnification up to the maximum 60X. When I use the scope for wildlife spotting, the sweet spot seems to be about 30X magnification; 30X gives me an ideal combination of sharp images and a wide field of view, perfect for identifying Puffins and Pelicans along the coast. I also like the compact size and light weight of the Blackhawk 60. At only 14 inches long and weighing less than two pounds, the Blackhawk 60 is light enough to use a photo tripod such as the SLIK U-9000 in the field. Like other entry level spotting scopes, the Barska Blackhawk 60 uses an Achromatic objective lens, which means that some false color or blue fringing is noticeable at high power. I’ve been pleasantly surprised by the quality and value of the binoculars and spotting scopes imported by Barska the last few years. The Barska Blackhawk 60mm spotting scope simply offers very good optical performance for a very reasonable price. --Jeff Phillips Pros: Excellent price/performance ratio Very good Achromatic optics Waterproof design with rubber coating Premium hard shell case included Cons: Blue fringing noticeable at high power Limited eye relief for eyeglass wearers

Features

  • Complete waterproof and fogproof protection for all weather conditions
  • Variable zoom magnifications from 20x-60x for different applications with a glare reducing sun-shade
  • Multi-coated optics and massive objective lens increases light gathering ability thus delivering brighter images in low light conditions
  • Ergonomically designed with shock-absorbing rubber armor for maximum protection and enhancing overall handling
  • Convenient and portable as includes tripod, soft carrying case and premium hard side aluminum case
BARSKA 3-12x50 IR Huntmaster Pro 30/30 IR Cross Riflescope BARSKA 3-12x50 IR Huntmaster Pro 30/30 IR Cross Riflescope

List Price: $171.50
Sale Price: $69.99
You save: $101.51 (59%)

 

Description

Vastly improve accuracy. 3-12x50 mm Illuminated Reticle Scope, now ON SALE! Low light? No problem. This top-grade Scope is designed just for that. Also dark background hunting conditions. All thanks to the illuminated "center-lit" reticle, with 11 brightness settings. Bright. Dead-on. Top performance all the way. My sweet volume buy and sale price saves you big! That's more like it! Details: Waterproof; Fogproof; Shockproof; Large multi-coated 50 mm objective lens for vivid views; Parallax-free at 100 yds. Fast-focus eyebell; 1/4" clickable M.O.A. for precise windage / elevation; F.O.V. @ 100 yds. is 35' at 3X, 10' at 12X; 1" diam. tube is 13" long, weighs 21 3/4ozs. Scope caps included. Discover the accuracy difference. Act right now! 3-12x50 mm IR Scope, Matte Black

Fully multicoated optics and a center-lit illuminated reticle with 11 brightness settings mean shooters enjoy sharp, crisp target acquisition, regardless of conditions. The BARSKA Huntmaster Pro is an ideal riflescope when lighting conditions are anything but ideal. Combining advanced optic technology, ruggedly durable construction, and remarkable accuracy, it's built around a center-lit illuminated 30/30 IR cross reticle with no fewer than 11 brightness settings. A fast-focus eye bell, large objective lens, and multicoated optics combine to deliver clear, high-contrast downrange views. Features Water-, fog-, and shock-proof 30/30 infrared cross reticle Fully multicoated optics Adjustable for windage, elevation, and rheostat Black matte finish Includes battery and lens cloth Specifications 3-to-12X magnification 13-inch tube length One-inch tube diameter 50-millimeter objective lens 16.7-4.2-millimeter exit pupil 35-foot field of view at 100 yards at 3X magnification Ten-foot field of view at 100 yards at 12X magnification 2.7-inch eye relief 0.25-inch click value 21.3-ounce weight Warranty This BARSKA optical product includes a limited lifetime manufacturer's warranty against defects in materials and workmanship. About BARSKA BARSKA is a worldwide optics company offering an extensive line of precision sport and scientific products including binoculars, riflescopes, spotting scopes, telescopes, and microscopes. The company's product lines are designed and built with the latest optical technology, allowing users to enjoy beloved outdoor activities even more, and achieve exacting results when studying objects large and small.

Features

  • Ideal rifle-scope when lighting conditions are less than ideal, combining advanced optic technology
  • Fast-focus eye bell, large objective lens, and multi-coated optics deliver clear, high-contrast downrange views
  • 3 to 12X magnification, water, fog and shock-proof, adjustable for wind-age, elevation and rheostat
  • 13-Inch tube length and one-Inch tube diameter, 50-Millimeter objective lens
  • 2.7-Inch eye relief, 0.25-Inch click value and 21.3-Ounce weight, limited lifetime warranty
KonuSpace - 4 Junior Telescope KonuSpace - 4 Junior Telescope

Sale Price: $42.99

 

Description

50mm (1.9") Telescope & Zoom Spotting Scope with Table Tripod -- What could be more convenient than two viewing instruments in one! The 100x telescope for astronomical use has two eyepieces included- 100x and 48x. -- The 28x zoom spotting scope for terrestrial use features a zoom eyepiece with 6x to 28x magnifications. -- The table tripod makes moving around easy for young users, and the set now includes Skywatch astronomy software (windows based). -- Constructed with a Galilean lens system, it is able to produce good images with a nice degree of detail and contrast for a starter scope. A great gift for kids. The KonuSpace -4 can also be used for terrestrail viewing. -- Includes 90 degrees diagonal mirror. Focal length equals 600mm and focal ratio f/12. -- Designed for children over 8 years old. Adult supervision recommended. -- --

Konus Space-6 Telescope Konus Space-6 Telescope

Sale Price: $89.95

 

Description

See the surface of the moon at up to 100X magnified with this high-quality beginners telescope. High-quality metal construction refractor telescope with all-glass multicoated optics. Made by Konus, one of the most respected European brand names in telescopes and microscopes. diameter 60mm (2") focal length 800 mm (31.5") focal ratio f/13.3 alt-azimuth mount full-size 2.2-3.8 ft (67-116cm) metal tripod included 5x24 finderscope 90° diagonal mirror lunar filter included eyepieces H 8 mm and H 20 mm, diam. 24.5 mm (1") magnification with supplied eyepieces 100x and 48x eyepiece zoom 6x÷28x Comes in a box with detailed instructions in eight languages. Great for beginners! Comes with free Sky Explorer astronomy software for Windows based PCs and a free moon and sky map!

Features

  • 800mm (31.5") focal length; ratio f/13.3
  • Diameter 60mm (2")
  • 5x24 finderscope
  • Lunar Filter & lenses included
Meade DS2102 Computerised 4 Meade DS2102 Computerised 4" Refractor Telescope

List Price: $324.95

 

Description

The Meade DS2102 is a fully computerised 4" Refractor complete with high quality accessories. The 4" fully coated achromat optics will provide sharp bright high resolution images of Solar system objects along with high contrast views of galaxies and nebulae. The efficient unobstructed optics are more than capable of resolving the Cassini division in Saturns ring system and the great red spot on the surface of Jupiter. High levels of detail can be discerned in the Orion nebula (M42) and many other Messier objects. The lightweight yet robust mount and tripod will automatically guide you to hundreds of objects so you can spend your time looking at rather than for targets in the night sky! The Autostar is the #497 and boasts a database in excess of 30,000 objects with many functions such as "tonights best" and satelite and comet tracking.
This package includes two premium Meade eyepieces and a red dot finder. The mount and tripod are both constructed from aluminium.

Features

  • Large 102mm fully coated optics
  • Advanced Autostar with 30,000 object database
  • Includes two super plossl eyepieces, scope tripod & accessories
  • D=102mm F=800mm f/7.7 Optical Tube - 1.25" 9.7mm and 26mm Super Plossl eyepieces - 1.25" Diagonal Red Dot Finder
Alpen 20-60x80 Spotting Scope Kit Alpen 20-60x80 Spotting Scope Kit

List Price: $642.00
Sale Price: $339.98
You save: $302.02 (47%)

 

Description

Spotting scope users demand top-quality optics that perform flawlessly under all weather conditions. Enter the Alpen 20-60x80 spotting scope kit, which includes a waterproof, fogproof spotting scope that's ideal for backcountry use, benchrest shooting, or just checking out the scenery from your backyard. The scope is equipped with BaK-4 lenses and fully multicoated optics, guaranteeing superior brightness, resolution, and edge clarity regardless of your subject. The scope's 20 to 60x magnification range and 80mm objective lens, meanwhile, provide a generous field of view at low power and a super-close-up view of distant objects at high power, so you can enjoy the best of all worlds. And the Alpen scope stands up to rough handling thanks to the nitrogen-filled housing, which is waterproof, dustproof, and shock-resistant. The kit also comes with a micro-adjustable (vertical and horizontal) tabletop tripod for stability and a durable, attractive foam-filled aluminum case for full scope protection. Other features include a 45-degree angled eyepiece with a 360-degree adjustable body collar and an extendable sunshade. The scope carries Alpen's lifetime warranty against defects in materials and workmanship. Specifications Magnification: 20x to 60x Objective lens diameter: 80mm Eyepiece: 45-degree angled Focus system: Center Prism type: Porro Field of view: 113 feet @ 1,000 yards (20x); 55 feet @ 1,000 yards (60x) Exit pupil: 4mm to 1.33mm Eye relief: 19mm to 18mm Close focus distance: 20 feet (20x) to 25 feet (60x) Prism material: BaK-4 lenses Lens coating: Fully multicoated Tripod adaptable: Yes Waterproof/fogproof: Yes Type of case: Aluminum Length: 17 inches Weight: 56 ounces Warranty: Lifetime About Alpen Optics Established in 1997, Alpen Optics produces a full line of binoculars, spotting scopes, riflescopes, and accessories designed to offer superior value to the consumer. The company produces more than 70 products and accessories chock full of features and benefits normally found on much more expensive brands. Alpen backs up its commitment to quality manufacturing with a limited lifetime factory warranty. Alpen is headquartered in Rancho Cucamonga, California.

Spotting scope users demand top quality optics that perform flawlessly under all weather conditions. Alpen spotting scopes are nitrogen filled, waterproof, dustproof, and shock-resistant. Made to perform flawlessly under all weather conditions, Alpen spotting scopes feature multi-coated lens and powerful magnification that cuts through visual noise to let you spot and hold your subject with ease. Alpen spotting scope kits provide a durable and safe way to protect your spotting scope and accessories. All cases have internal molded foam protection. It also includes micro adjustable (vertical and horizontal) metal table top tripod.

Features

  • Spotting scope with 20-60x magnification and 80mm objective lens
  • BaK-4 fully multicoated optics for superior brightness, resolution, and edge clarity
  • 45-degree angled eyepiece; waterproof, fogproof, and shock-resistant housing
  • Includes micro-adjustable tabletop tripod and foam-filled aluminum case
  • Measures 17 inches long; weighs 56 ounces; lifetime manufacturer's warranty

konus telescope

telescope konus

October 3rd, 2009 admin Comments off


telescope konus

Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope

List Price: $19.00
Sale Price: $7.22
You save: $11.78 (62%)

 

Description

CARSON MM-200 MICROMAX LEDTM 60X-100X POCKET MICROSCOPE

Lightweight and portable, the Carson MM-200 MicroMax pocket microscope is ideal for on-the-go science. The MicroMax offers a powerful 60 to 100x magnification range, making it easy to examine blood samples, bugs, and anything else that's worthy of a closer look. The microscope also includes a built-in LED light that provides a bright, clear image, along with a rubberized eyepiece for comfortable viewing. Best of all, the MicroMax fits conveniently in a jacket pocket, so you can bring it along wherever you go--whether it's a school field trip or a visit to a friend's house. Specifications Magnification: 60 to 100x Batteries: 3 SG3 button cell (included) Dimensions: 1.25 by 3.25 by 0.75 inches (W x H x D) Weight: 1.1 ounces

Features

  • LED lighted
  • Runs on 3 SG3 Button Cell Batteries (Included)
  • Power and zoom controls
  • weighs 7.2 ounce

telescope konus

 

I have a reflector telescope with 130mm/5 inches apeture and 1000mm focal length. What can I see with it?

It has It has a 17mm 100x magnification Plossl eyepiece. The telescope is a Konus Motor 130. It has a focal ratio f/8, whatever that means. What can I see with it?

here is the full specs:

http://www.uk-telescopes.co.uk/konus_motor_130%20telescope.htm

The 5" Konus is an excellent entry-level telescope. If you are in the UK you're going to have problems with Jupiter--for the next few years its orbit keeps it low to the horizon, so details will be hard to get. Saturn is moving into a rings-edge-on phase so we're going to lose a few years there too, unfortunately. With Mars you'll see polar caps and some dark markings on good night when Mars is fairly close (as right now). The person who said you'd see Olympus Mons was regrettably a tad over-enthusiastic. This is a 5" Konus not a 5" Takahashi, and even so, Olympus Mons--a big volcanic mountain on Mars--is an extremely difficult visual target.

The more general answer to your question is that you can do a lifetime of observing with a 5" aperture, once you learn to appreciate its limits. If you like using a German Equatorial Mount, which is what came with your mount, then you could at some future point get a more stable set up (and less frustration hunting for things) by looking into a Vixen Great Polaris or Super Polaris. Otherwise at some point you might consider a Dobson configuration, but it won't track.

There are several thousand open clusters, galaxies, globular clusters, and nebulae that are within reach of a 5" telescope, as well as many double stars. Skiff and Tirion's BRIGHT STAR ATLAS gives 600 deep sky objets (open cluster, galaxies, globular clusters) on well-drawn maps and only costs U.S. $10.00. I have provided a link below. Anything listed in the Brigth Star Atlas (which is more than just bright stars) should be accessible in your scope.

Another book written specifically for your telescope size is Sue French's "Celestial Sampler" which should be available at any major (and many minor) book vendors.

If you are a true beginner you will need to get a PLANISPHERE which is a wheel-like map that will show you where the constellations are; everything hinges on being able to find the constellation, the books take over from there. Sky and Telescope (see the link to Sue French's book) sells these but I'm sure you can get one in the UK cheaper. For astro-stuff in the UK try scastro (link below).

To sum up, you can see many many things with your telescope and it is a recommended beginner's instrument (often discussed on astromart.com, which is a great resource, costs $12 to join; they have a "beginner's" discussion group, and you can also buy used equipment on astromart). Many people never buy MORE than a five inch telescope, they just buy FANCIER (very expensive Takahashi refractors, for example). The Orion Nebula (M42), the Perseus double cluster (NGC 869 & 864), several dozen open clusters in Cassiopeia, Auriga, Sagittarius, Cygnus, and too much to go into here. Many double stars too.

Also: to help find things you want maximum wide field. That means low magnification, big view, to help you find what you're looking for. (You can increase the magnification after you find it). The "comes with" eyepieces on your scope won't do maximum field of view. Call your vendor and ask for an inexpensive 32mm 1.25" plossl, or go on Astromart and buy one used. We're talking U.S. $30 to $50. This need not be a quality eyepiece but quality can always help--when you're feeling flush the U.S. $300 24mm Pan Optic is a nice alternative....costs more than your scope!! (this biz is all about accessories) For best views your scope will need to be COLLIMATED, your instructions probably tell you how to do it but you'll need to have a real astronomy discussion group, not Yahoo questions, to get detailed help. Try this group for coaching:

http://tech.groups.yahoo.com/group/telescopes/

Konus Konusmotor Electronic 500 Newton 114mm 45 Telescope 1781 Telescopes
Konus Konusmotor Electronic 500 Newton 114mm 45 Telescope 1781 Telescopes
Paypal   US $159.95
Konus 60x900mm Konuspace 7 Telescope 1744 Telescopes
Konus 60x900mm Konuspace 7 Telescope 1744 Telescopes
Paypal   US $98.99
Konus Konustart 900 Telescope 1741 Telescopes
Konus Konustart 900 Telescope 1741 Telescopes
Paypal   US $129.99
Konus Konuspace 5 Telescope 1731 Telescopes
Konus Konuspace 5 Telescope 1731 Telescopes
Paypal   US $48.99
Konus Konusmotor 70 70mm 27 Refractor Telescope 1782 Telescopes
Konus Konusmotor 70 70mm 27 Refractor Telescope 1782 Telescopes
Paypal   US $139.99
Konus Digimax 90 Telescope 1770 Telescopes
Konus Digimax 90 Telescope 1770 Telescopes
Paypal   US $359.99
Konus MOTORMAX 90HM 90mm Refractor Telescope NEW in BOX
Konus MOTORMAX 90HM 90mm Refractor Telescope NEW in BOX
Paypal   US $260.00
Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope Carson MM-200 Carson Micromax LED 60X-100X LED Lighted Pocket Microscope

List Price: $19.00
Sale Price: $7.22
You save: $11.78 (62%)

 

Description

CARSON MM-200 MICROMAX LEDTM 60X-100X POCKET MICROSCOPE

Lightweight and portable, the Carson MM-200 MicroMax pocket microscope is ideal for on-the-go science. The MicroMax offers a powerful 60 to 100x magnification range, making it easy to examine blood samples, bugs, and anything else that's worthy of a closer look. The microscope also includes a built-in LED light that provides a bright, clear image, along with a rubberized eyepiece for comfortable viewing. Best of all, the MicroMax fits conveniently in a jacket pocket, so you can bring it along wherever you go--whether it's a school field trip or a visit to a friend's house. Specifications Magnification: 60 to 100x Batteries: 3 SG3 button cell (included) Dimensions: 1.25 by 3.25 by 0.75 inches (W x H x D) Weight: 1.1 ounces

Features

  • LED lighted
  • Runs on 3 SG3 Button Cell Batteries (Included)
  • Power and zoom controls
  • weighs 7.2 ounce
Barska BlackBlackhawk 20-60x60 Waterproof Straight Spotting Scope w/Tripod, Soft Carry Case & Premium Hard Case Barska BlackBlackhawk 20-60x60 Waterproof Straight Spotting Scope w/Tripod, Soft Carry Case & Premium Hard Case

List Price: $251.90
Sale Price: $109.98
You save: $141.92 (56%)

 

Description

The Barska Blackhawk 60mm spotting scope is a terrific value because it offers very good optical performance in a compact and affordable package. The scope itself features waterproof design, multicoated optics, and a zoom eyepiece with magnification ranging from 20X up to 60X. The accessories include a light weight table-top tripod, a soft caring case, and a durable hard shell case that will allow the rubber armored scope to stand up to a lifetime of use. The Blackhawk 60mm spotting scope uses a multi-coated objective lens and rugged porro-prism design for bright, clear images. At 100 yards, I can clearly focus in on a target, even when I crank the magnification up to the maximum 60X. When I use the scope for wildlife spotting, the sweet spot seems to be about 30X magnification; 30X gives me an ideal combination of sharp images and a wide field of view, perfect for identifying Puffins and Pelicans along the coast. I also like the compact size and light weight of the Blackhawk 60. At only 14 inches long and weighing less than two pounds, the Blackhawk 60 is light enough to use a photo tripod such as the SLIK U-9000 in the field. Like other entry level spotting scopes, the Barska Blackhawk 60 uses an Achromatic objective lens, which means that some false color or blue fringing is noticeable at high power. I’ve been pleasantly surprised by the quality and value of the binoculars and spotting scopes imported by Barska the last few years. The Barska Blackhawk 60mm spotting scope simply offers very good optical performance for a very reasonable price. --Jeff Phillips Pros: Excellent price/performance ratio Very good Achromatic optics Waterproof design with rubber coating Premium hard shell case included Cons: Blue fringing noticeable at high power Limited eye relief for eyeglass wearers

Barska 20 - 60x60 mm Waterproof Blackhawk Spotting Scope. Big name quality, big time VALUE! Cheap equipment just doesn't cut it. But the Barska Blackhawk 20-60x60 mm Spotting Scope gives you a great price on full-function features you'd normally pay BIG bucks to get. Engineered with unsurpassed optical performance and durability by those who understand the harsh hunting conditions scopes have to endure. Designed for the discriminating hunters who demand only the best, this Blackhawk is the best value in its class. Zoom in on the features: Big 60 mm objective increases light gathering ability for brighter images in low-light conditions; Multi-coated optics maximize light transmission for superior brightness and clarity; Powerful zoom provides 20-60x magnification; 91-45 ft F.O.V. @ 1,000 yds.... close focus: 23 ft; Complete waterproof protection is ideal for all-weather conditions; Long 18-15 mm eye relief and flip-down eyecups are perfect for glasses and non-glasses wearers alike; Glare-reducing sunshade included; Rubber armor designed to protect and absorb shock; Quality pan-head tripod; Premium hard carry case included, plus soft-side case; Approx. 15", 2 3/4 lb.; Spot your target without killing your budget. Order Today! Barska 20-60x60 mm Waterproof Blackhawk Spotting Scope

Features

  • Complete waterproof and fogproof protection for all weather conditions
  • Variable zoom magnifications from 20x-60x for different applications with a glare reducing sun-shade
  • Multi-coated optics and massive objective lens increases light gathering ability thus delivering brighter images in low light conditions
  • Ergonomically designed with shock-absorbing rubber armor for maximum protection and enhancing overall handling
  • Convenient and portable as includes tripod, soft carrying case and premium hard side aluminum case
BARSKA 3-12x50 IR Huntmaster Pro 30/30 IR Cross Riflescope BARSKA 3-12x50 IR Huntmaster Pro 30/30 IR Cross Riflescope

List Price: $171.50
Sale Price: $69.99
You save: $101.51 (59%)

 

Description

Fully multicoated optics and a center-lit illuminated reticle with 11 brightness settings mean shooters enjoy sharp, crisp target acquisition, regardless of conditions. The BARSKA Huntmaster Pro is an ideal riflescope when lighting conditions are anything but ideal. Combining advanced optic technology, ruggedly durable construction, and remarkable accuracy, it's built around a center-lit illuminated 30/30 IR cross reticle with no fewer than 11 brightness settings. A fast-focus eye bell, large objective lens, and multicoated optics combine to deliver clear, high-contrast downrange views. Features Water-, fog-, and shock-proof 30/30 infrared cross reticle Fully multicoated optics Adjustable for windage, elevation, and rheostat Black matte finish Includes battery and lens cloth Specifications 3-to-12X magnification 13-inch tube length One-inch tube diameter 50-millimeter objective lens 16.7-4.2-millimeter exit pupil 35-foot field of view at 100 yards at 3X magnification Ten-foot field of view at 100 yards at 12X magnification 2.7-inch eye relief 0.25-inch click value 21.3-ounce weight Warranty This BARSKA optical product includes a limited lifetime manufacturer's warranty against defects in materials and workmanship. About BARSKA BARSKA is a worldwide optics company offering an extensive line of precision sport and scientific products including binoculars, riflescopes, spotting scopes, telescopes, and microscopes. The company's product lines are designed and built with the latest optical technology, allowing users to enjoy beloved outdoor activities even more, and achieve exacting results when studying objects large and small.

Vastly improve accuracy. 3-12x50 mm Illuminated Reticle Scope, now ON SALE! Low light? No problem. This top-grade Scope is designed just for that. Also dark background hunting conditions. All thanks to the illuminated "center-lit" reticle, with 11 brightness settings. Bright. Dead-on. Top performance all the way. My sweet volume buy and sale price saves you big! That's more like it! Details: Waterproof; Fogproof; Shockproof; Large multi-coated 50 mm objective lens for vivid views; Parallax-free at 100 yds. Fast-focus eyebell; 1/4" clickable M.O.A. for precise windage / elevation; F.O.V. @ 100 yds. is 35' at 3X, 10' at 12X; 1" diam. tube is 13" long, weighs 21 3/4ozs. Scope caps included. Discover the accuracy difference. Act right now! 3-12x50 mm IR Scope, Matte Black

Features

  • Ideal rifle-scope when lighting conditions are less than ideal, combining advanced optic technology
  • Fast-focus eye bell, large objective lens, and multi-coated optics deliver clear, high-contrast downrange views
  • 3 to 12X magnification, water, fog and shock-proof, adjustable for wind-age, elevation and rheostat
  • 13-Inch tube length and one-Inch tube diameter, 50-Millimeter objective lens
  • 2.7-Inch eye relief, 0.25-Inch click value and 21.3-Ounce weight, limited lifetime warranty
KonuSpace - 4 Junior Telescope KonuSpace - 4 Junior Telescope

Sale Price: $42.99

 

Description

50mm (1.9") Telescope & Zoom Spotting Scope with Table Tripod -- What could be more convenient than two viewing instruments in one! The 100x telescope for astronomical use has two eyepieces included- 100x and 48x. -- The 28x zoom spotting scope for terrestrial use features a zoom eyepiece with 6x to 28x magnifications. -- The table tripod makes moving around easy for young users, and the set now includes Skywatch astronomy software (windows based). -- Constructed with a Galilean lens system, it is able to produce good images with a nice degree of detail and contrast for a starter scope. A great gift for kids. The KonuSpace -4 can also be used for terrestrail viewing. -- Includes 90 degrees diagonal mirror. Focal length equals 600mm and focal ratio f/12. -- Designed for children over 8 years old. Adult supervision recommended. -- --

Konus Space-6 Telescope Konus Space-6 Telescope

Sale Price: $89.95

 

Description

See the surface of the moon at up to 100X magnified with this high-quality beginners telescope. High-quality metal construction refractor telescope with all-glass multicoated optics. Made by Konus, one of the most respected European brand names in telescopes and microscopes. diameter 60mm (2") focal length 800 mm (31.5") focal ratio f/13.3 alt-azimuth mount full-size 2.2-3.8 ft (67-116cm) metal tripod included 5x24 finderscope 90° diagonal mirror lunar filter included eyepieces H 8 mm and H 20 mm, diam. 24.5 mm (1") magnification with supplied eyepieces 100x and 48x eyepiece zoom 6x÷28x Comes in a box with detailed instructions in eight languages. Great for beginners! Comes with free Sky Explorer astronomy software for Windows based PCs and a free moon and sky map!

Features

  • 800mm (31.5") focal length; ratio f/13.3
  • Diameter 60mm (2")
  • 5x24 finderscope
  • Lunar Filter & lenses included
Meade DS2102 Computerised 4 Meade DS2102 Computerised 4" Refractor Telescope

List Price: $324.95

 

Description

The Meade DS2102 is a fully computerised 4" Refractor complete with high quality accessories. The 4" fully coated achromat optics will provide sharp bright high resolution images of Solar system objects along with high contrast views of galaxies and nebulae. The efficient unobstructed optics are more than capable of resolving the Cassini division in Saturns ring system and the great red spot on the surface of Jupiter. High levels of detail can be discerned in the Orion nebula (M42) and many other Messier objects. The lightweight yet robust mount and tripod will automatically guide you to hundreds of objects so you can spend your time looking at rather than for targets in the night sky! The Autostar is the #497 and boasts a database in excess of 30,000 objects with many functions such as "tonights best" and satelite and comet tracking.
This package includes two premium Meade eyepieces and a red dot finder. The mount and tripod are both constructed from aluminium.

Features

  • Large 102mm fully coated optics
  • Advanced Autostar with 30,000 object database
  • Includes two super plossl eyepieces, scope tripod & accessories
  • D=102mm F=800mm f/7.7 Optical Tube - 1.25" 9.7mm and 26mm Super Plossl eyepieces - 1.25" Diagonal Red Dot Finder
Alpen 20-60x80 Spotting Scope Kit Alpen 20-60x80 Spotting Scope Kit

List Price: $642.00
Sale Price: $339.98
You save: $302.02 (47%)

 

Description

Spotting scope users demand top-quality optics that perform flawlessly under all weather conditions. Enter the Alpen 20-60x80 spotting scope kit, which includes a waterproof, fogproof spotting scope that's ideal for backcountry use, benchrest shooting, or just checking out the scenery from your backyard. The scope is equipped with BaK-4 lenses and fully multicoated optics, guaranteeing superior brightness, resolution, and edge clarity regardless of your subject. The scope's 20 to 60x magnification range and 80mm objective lens, meanwhile, provide a generous field of view at low power and a super-close-up view of distant objects at high power, so you can enjoy the best of all worlds. And the Alpen scope stands up to rough handling thanks to the nitrogen-filled housing, which is waterproof, dustproof, and shock-resistant. The kit also comes with a micro-adjustable (vertical and horizontal) tabletop tripod for stability and a durable, attractive foam-filled aluminum case for full scope protection. Other features include a 45-degree angled eyepiece with a 360-degree adjustable body collar and an extendable sunshade. The scope carries Alpen's lifetime warranty against defects in materials and workmanship. Specifications Magnification: 20x to 60x Objective lens diameter: 80mm Eyepiece: 45-degree angled Focus system: Center Prism type: Porro Field of view: 113 feet @ 1,000 yards (20x); 55 feet @ 1,000 yards (60x) Exit pupil: 4mm to 1.33mm Eye relief: 19mm to 18mm Close focus distance: 20 feet (20x) to 25 feet (60x) Prism material: BaK-4 lenses Lens coating: Fully multicoated Tripod adaptable: Yes Waterproof/fogproof: Yes Type of case: Aluminum Length: 17 inches Weight: 56 ounces Warranty: Lifetime About Alpen Optics Established in 1997, Alpen Optics produces a full line of binoculars, spotting scopes, riflescopes, and accessories designed to offer superior value to the consumer. The company produces more than 70 products and accessories chock full of features and benefits normally found on much more expensive brands. Alpen backs up its commitment to quality manufacturing with a limited lifetime factory warranty. Alpen is headquartered in Rancho Cucamonga, California.

Spotting scope users demand top quality optics that perform flawlessly under all weather conditions. Alpen spotting scopes are nitrogen filled, waterproof, dustproof, and shock-resistant. Made to perform flawlessly under all weather conditions, Alpen spotting scopes feature multi-coated lens and powerful magnification that cuts through visual noise to let you spot and hold your subject with ease. Alpen spotting scope kits provide a durable and safe way to protect your spotting scope and accessories. All cases have internal molded foam protection. It also includes micro adjustable (vertical and horizontal) metal table top tripod.

Features

  • Spotting scope with 20-60x magnification and 80mm objective lens
  • BaK-4 fully multicoated optics for superior brightness, resolution, and edge clarity
  • 45-degree angled eyepiece; waterproof, fogproof, and shock-resistant housing
  • Includes micro-adjustable tabletop tripod and foam-filled aluminum case
  • Measures 17 inches long; weighs 56 ounces; lifetime manufacturer's warranty

telescope konus

Telescope Reducer

July 19th, 2009 admin Comments off


Telescope Reducer

Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061 Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061

 

Description

Takahashi TOA 645 Super Reducer for TOA-150

Telescope Reducer

 

Conveyor Safety: Stay on a Roll!

Telescopic boom conveyors are essential to the swift and efficient running of most modern warehouses, post depots and distribution centres. Primarily used to load and unload lorries with loose and unpalletised parcels, they extend and retract, facilitating swift, efficient loading and unloading. However, if misused, misapplied or neglected, telescopic boom conveyors can be dangerous.

Telescopic boom conveyors are different to standard conveyors and present additional risks. The telescopic sections create nipping points (areas of the machine that could trap parts of a person) where they retract, and the chains underneath that drive them can be hazardous. Telescopic boom conveyors often extend and retract quickly, which can increase the chance of accidents (e.g. forklift collision) if workers are not made aware. Employers must understand these differences and implement the proper safety procedures.

Conveyor safety comprises three basic areas:

1.Equipment

2.Staff training

3.Environment

Equipment

In the UK, telescopic boom conveyors fall under the Provision & Use of Work Equipment Regulations 1998. These specify work equipment must be suitable for use, maintained in a safe condition and regularly inspected to ensure it stays this way.

All a telescopic boom conveyor's controls should be accessible and clearly marked. This will allow workers to identify them immediately and shut the conveyor off in an emergency. Only qualified personnel should modify controls.

Fully enclosed boom conveyors protect operators from dangerous moving parts and nipping points. Some conveyor models incorporate physical safety barriers known as guard plates, which cover dangerous areas (e.g., where the telescopic sections retract). These must be in place before anyone operates the conveyor.

Alarms and lights alert workers a telescopic boom conveyor is about to become active. This is inexpensive and highly effective.

Regular inspections will help keep conveyors clean and in good working order. Only qualified engineers should carry out maintenance and repair work. Conveyors must be switched off and isolated while this takes place.

Staff Training

Misuse and not following procedures are common causes of conveyor related accidents, so anyone who works on, near or around them must undergo rigorous training. This may include seminars, courses and awareness sessions.

It is imperative that people do not climb, sit, stand, walk or ride on boom conveyors at any time. This is common sense, but conduct of this nature causes accidents every year, resulting in serious injuries and equipment damage.

Long hair and loose clothing can entangle in the conveyor mechanism and are extremely hazardous. Anyone entering the site must bind long hair, tuck in ties and roll up loose sleeves. Visitors must receive a safety briefing before being allowed near boom conveyors.

Anyone who works on or around a telescopic boom conveyor must be familiar with its controls. They should be encouraged to report unsafe conditions, such as wobbly guards and people nearby with loose hair or clothes.

Environment

The area surrounding the boom conveyor must be free of obstructions and clean. Tools, parcels or rubbish lying around can lead to trip hazards and fires. Well-lit work areas provide good visibility and reduce the risk of accidents. Clearly marking routes to, from and around conveyors will help avoid confusion.

Warning signs heighten awareness and greatly improve safety. Signs should be legible and positioned where people can easily see them.

Boom conveyors improve efficiency and throughput, but accidents can cause serious injuries, which endanger an employee's health. Associated costs, including lawsuits, lost productivity, rehabilitation and training replacement staff, are high. Companies that take steps to improve safety benefit from safer, more productive working environments and reduced costs.

Training employees properly, making them aware of the dangers and ensuring they follow operating procedures will go a long way to keeping work areas safe and protecting a business.

About the Author

Steve Nuttall is Sales Director at Sovex, the leading UK conveyor manufacturer. Sovex is based in Prenton on the Wirral, and employs around forty people. It operates from modern manufacturing and warehousing facilities covering some 20,000 square feet.

Sovex supplies a wide range of conveying products, including telescopic boom conveyors, fixed powered roller conveoyrs, and mobile vehicle loaders.

For more information, visit http://www.sovexsystems.com

Is there a PVC fitting that will allow me to put a 2"pvc pipe INSIDE a 4" PVC pipe, like a pipe in a pipe?

I need to plumb a 2" pipe inside a 4" pvc pipe. All the fittings I have seen that are reducer fittings will stop my 2" from sliding inside the 4" line, which makes sense, but I need the 2" to slide inside the 4", I guess you would say it needs to telescope.
PLEASE READ.... I know that there are reducers for pipe, but I need one that will allow the 2" PVC pipe to slid eALL of the way INSIDE the 4" pipe, not just into the reducer fitting. All standard reducers have a stop that holds the small pipe from sliding all the way inside the larger. I want one without the stops as I need to pipe to slide inside the larger one.

Of course there is.. Go to any store such as Lowe's/Ace/Home Depot and get the reducers necessary.. EASY !!

Celestron f 63 Reducer Corrector for SCT Telescope Works with Meade
Celestron f 63 Reducer Corrector for SCT Telescope Works with Meade
Paypal   US $85.00
Rini 125 to T 06X telescope reducer CCD imaging
Rini 125 to T 06X telescope reducer CCD imaging
Paypal   US $21.95
Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061 Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061

 

Description

Takahashi TOA 645 Super Reducer for TOA-150

Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061-1 Takahashi TOA 645 Super Reducer for TOA-150 - TAKA061-1

 

Description

Takahashi TOA 645 Super Reducer for TOA-150

Celestron UHC/LPR Night Lighting Pollution Reducer Filter for Telescopes 1.25 inch Thread (1-1/4) Celestron UHC/LPR Night Lighting Pollution Reducer Filter for Telescopes 1.25 inch Thread (1-1/4)

List Price: $96.95
Sale Price: $54.40
You save: $42.55 (44%)

 

Description

Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow). The new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites. In addition to it's optimum spectral and optical characteristics, the UHC/LPR filter offers important features that set it apart and result in the highest quality celestial views:

Features

  • The multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.
  • Improved transmission translates to maximum image brightness and contrast. Users of smaller, 4"-11" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact.
  • The high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC/LPR filter retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm)
Celestron f/6.3 Reducer Corrector for C Series Telescopes Celestron f/6.3 Reducer Corrector for C Series Telescopes

List Price: $211.95
Sale Price: $113.55
You save: $98.40 (46%)

 

Description

This nifty optical element shortens the effective focal length of Schmidt-Cassegrain telescopes by 37%, converting the standard f/10 optical system to a faster f/6.3 system (f/7 for the Celestron 14" SCT). The result is a wider field of view, to better frame deep-sky objects that may not fit within the narrower field of view at f/10. The shorter focal length also reduces exposure times for astrophotography and CCD imaging by 2.5 times! This device also corrects for field curvature and other aberrations inherent in the telescope's optical system. Stars appear pinpoint sharp from one edge of the field to the other. The F/6.3 Reducer/Corrector features a four-element, fully multi-coated optical design with a 41mm clear aperture. It's compatible with any brand and size of Schmidt-Cassegrain telescope and with all visual and photographic accessories. Threads onto rear cell.

Features

  • Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37%
  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view
  • Shortens exposure times for astrophotography by 2.5 times
  • Four-element, fully multi-coated optical design with 41mm clear aperture
  • threads into rear cell and works with any brand and size of Schmidt-Cassegrain telescope
Celestron 94178 NexImage Reducer Lens Celestron 94178 NexImage Reducer Lens

List Price: $28.95
Sale Price: $16.99
You save: $11.96 (41%)

 

Description

This product has been discontinued from the manufacturer and is no longer available..Increase your field of view by as much as 2 times. This is great for wide field lunar and filtered solar imaging. For use with Celestron NexImage Solar System. The reducer replaces the 1.25" barrell and threads directly into the NexImager.

Increase your field of view by over two times for wide field lunar and filtered solar imaging with the Celestron 94178 NexImage reducer lens. This reducer lens replaces the 1.25-inch barrel and threads directly into the NexImage housing.

Features

  • Increases your field of view by 2x
  • Provides wide field lunar and filtered solar imaging
  • Replaces the 1.25-inch barrel
  • Lens threads directly into the NexImage housing
Celestron NexImage Solar System Imager Celestron NexImage Solar System Imager

List Price: $162.95

 

Description

The Celestron® NexImage astronomy is a complete CCD solar system imager capable of producing high quality planetary images with greater light sensitivity and color fidelity. The software automatically filters out video frames most affected by poor atmospheric "seeing" leaving only the sharpest, clearest frames to be stacked and aligned into one high-quality image.

Amazon.com Review Celestron's NexImage combines a sensitive CCD imaging device with powerful image processing software in one affordable package. Now anyone with a telescope can take pictures that are simply amazing. An image of Jupiter taken with the Celestron NexImage Solar System Imager Amateur astronomers have been taking great pictures of the moon and planets by using modified Webcams. The favored Webcams for astro-imaging have been the hard-to-find Philips ToUCam and Vesta models because of their high-performance CCD chips. Now Celestron's Neximage puts the same CCD technology in a package that's ready to use with any telescope that accepts 1.25-inch eyepieces. The NexImage includes an anodized metal nosepiece that fits in a 1.25-inch eyepiece holder. When I installed the Windows based software, I also updated my Windows Media Player files. Then I simply plugged the NexImage into my computers' USB port, and I was ready to start taking pictures. The NexImage CCD is sensitive enough that I can take "snapshots" of the Moon or Sunspots (always use a safe Solar filter, of course!) even without a motor-driven telescope. The real power of the NexImage package, however, comes from its included Registax software which automatically aligns and stacks hundreds of individual AVI video frames into one sharp, highly detailed picture. I used my 8-inch Celestron Schmidt-Cassegrain telescope (similar to the Nexstar 8 GPS ) and my 2x Ultima Barlow lens to capture some beautiful pictures of Jupiter and Saturn. The sensitive Sony CCD chip in the NexImage easily shows color and detail on Jupiter that just doesn't show up when I use CMOS-based Webcams. The fine performance of the NexImage package is limited somewhat by its included video capture software. The AmCap software doesn't give me the precise control of exposure times I'd like; I wasn't able to photograph the moon Callisto next to Jupiter, for instance, without overexposing the planet. Celestron doesn't mention the other little drawback in its ads. You'll have so much fun that your hard drive will start filling up with pictures and AVIs! --Jeff Phillips Pros: Sensitive CCD chip Fits any telescope that takes 1.25-inch eyepieces Powerful image processing software Cons: Takes practice to get the exposure time just right Software is Windows only You'll fill up your hard drive with pictures

Features

  • Complete CCD solar system imager produces high-quality planetary images
  • View and capture live video on your computer screen
  • Software automatically filters out fuzzy frames for sharper image
  • Easy to install and use
  • Manually control gain, contrast, exposure time, and much more from your PC
SCT 0.8x Reducer/Field Flattener SCT 0.8x Reducer/Field Flattener

 

Description

This very elegant 2" reducer/field flattener has been designed for optimal results with the 66mm series of telescopes AND other 80 or 90mm refractors.

Telescope Reducer

Telescope Focal Reducer

July 19th, 2009 admin Comments off


Telescope Focal Reducer

Celestron f/6.3 Reducer Corrector for C Series Telescopes Celestron f/6.3 Reducer Corrector for C Series Telescopes

List Price: $211.95
Sale Price: $113.55
You save: $98.40 (46%)

 

Description

This nifty optical element shortens the effective focal length of Schmidt-Cassegrain telescopes by 37%, converting the standard f/10 optical system to a faster f/6.3 system (f/7 for the Celestron 14" SCT). The result is a wider field of view, to better frame deep-sky objects that may not fit within the narrower field of view at f/10. The shorter focal length also reduces exposure times for astrophotography and CCD imaging by 2.5 times! This device also corrects for field curvature and other aberrations inherent in the telescope's optical system. Stars appear pinpoint sharp from one edge of the field to the other. The F/6.3 Reducer/Corrector features a four-element, fully multi-coated optical design with a 41mm clear aperture. It's compatible with any brand and size of Schmidt-Cassegrain telescope and with all visual and photographic accessories. Threads onto rear cell.

Features

  • Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37%
  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view
  • Shortens exposure times for astrophotography by 2.5 times
  • Four-element, fully multi-coated optical design with 41mm clear aperture
  • threads into rear cell and works with any brand and size of Schmidt-Cassegrain telescope

Telescope Focal Reducer

 

Power Amplifier System for High-Power, Passively Q-switched Micro laser

I. INTRODUCTION

Passively Q-switched microchip lasers are simple, compact and reliable sources of high repetition rate (1 to 100 kHz), near-infrared, sub-nanosecond pulses. To date, low-energy (0.3 to 3 mJ/pulse) and mid-energy (30 to 180 mJ/pulse) microchip lasers have been reported [1] with pulse durations of 200 to 500 ps and 650 to 2000 ps, respectively. For some applications, for instance, high precision ranging and imaging, higher-energy pulses, up to 360-440 mJ/pulse [2, 3] are required with pulse durations approaching 200 ps. The pathway to higher pulse energies requires the use of higher saturable absorption, which inevitably leads to longer pulse durations. An alternative approach is the use of a MOPA design with a microlaser oscillator and multipass amplifier [3]. In the only reported work to date on this approach, a MOPA system operated in the 10-m J range, producing 500-ps pulses [4].

We present here a MOPA system generating 335 m J at 1064 nm with efficient harmonic conversion to the visible and UV. At all wavelengths, the pulse durations were <400 ps. This source is a valuable tool for applications that include ranging, LIDAR, micro-materials processing, and UV spectroscopy in chemistry and biochemistry.

II. SYSTEM DESCRIPTION AND EXPERIMENTAL RESULTS

                Figure 1 shows a schematic layout of our MOPA system. A 1-watt, fiber-coupled diode laser operated at a 2 kHz pulse rate is used as a pump source for the Cr:YAG passively Q-

switched Nd:YAG microlaser. Pump light emerging from the 100-m m, 0.22 NA fiber is collected and focused into the microchip using two AR-coated aspheric lenses. The fiber is

positioned at the front focal plane of the first lens, and the microchip at the nominal back focal plane of the second lens. Two different "telescopes" were used to optimize the microlaser output: a 4:3 or a 2:1 reducing telescope. Approximately 98&percnt; of the light emerging from the fiber is delivered to the microchip when using either telescope.

The microchip laser output is collected by a spherical 50-mm FL lens. This lens is typically positioned about 63 mm from the microchip so the beam is gradually focused into the amplifier stage. The beam then passes through a TGG Faraday isolator equipped with input and output Glan-laser polarizers.

A half-wave plate positioned before the collimator lens adjusts the polarization angle of the microchip beam as it enters the first polarizer of the isolator. A second half-wave plate adjusts the polarization angle of the beam emerging from the second polarizer. The beam is turned 90° by the first 45° -incidence HR (45 HR), goes through a +150 mm FL cylindrical lens that focuses in the vertical plane, and bounces off the second 45 HR, before entering the 3-pass amplifier stage.

The cylindrical lens is positioned about 150 mm from the center of the amplifier slab, taking into account the fact that the beam makes three passes through the slab (the separation between the slab assembly’s miniature fold mirrors is about 20 mm, and the slab is about 15 mm long). The beam is back-reflected through the amplifier with a flat HR , and makes another 3 passes through the amplifier slab.

The back-reflected, double-pass amplified beam passes back through the optical system and into the Faraday isolator. The plane of polarization at the first polarizer is now rotated 90° relative to the microchip laser polarization. The double-pass-amplified beam is coupled out the system at the first polarizer, and emerges with a polarization vertical to the plane of the paper.

 

 

Fig. 1. Schematic layout of the Microlaser-Amplifier system.

Our amplifier gain material, Nd:YVO4, is particularly well suited for amplifying pulses with energies below 100 m J because of its extremely high gain. This is demonstrated by Fig. 2, where we present calculated double-pass gain curves for cw-pumped multi-pass slab amplifiers based on different Nd-doped materials.

The amplifier design employs a slab-geometry gain module with transverse pumping. The gain module consists of an a-axis-cut, 2-mm high by 3-mm wide by 15-mm long Nd:YVO4 slab. The slab was cw side-pumped by two 20-W diode laser bars emitting at 808 nm, with top and bottom heatsinking. The side faces of the slab are polished and antireflection coated at 808 nm for maximum coupling of the pump light. The outputs of the diode laser arrays are collimated, in the highly diverging direction, by a drawn aspheric cylinder lens to produce a nearly rectangular excitation region in the laser crystal. The laser mode is passed three times through the length of the excitation region, using a pair of miniature external mirrors, essentially transverse to the pump beam. This design allows for efficient extraction of the stored energy in a TEM00-mode beam.

 

Fig. 2. Calculated double-pass gain curves for cw-pumped Nd-doped multi-pass slab amplifiers.

Three different monolithic microchip oscillator designs were evaluated, each having a different Cr:YAG layer thickness. The first two designs were made by Synoptics according to Q-Peak specifications. Both employ a 0.5 mm thick layer of 3&percnt;-doped Nd:YAG. One chip design has a 0.25-mm-thick layer of Cr:YAG with a nominal unsaturated absorption of 6 cm-1. The output facet of the chip is coated for 80&percnt;R. The other chip design is the same, except that the Cr:YAG layer thickness is 0.5 mm. Originally, we intended to try a similar third design, but with a 0.75 mm Cr:YAG layer and a 60&percnt;R output facet. However, this chip was not coated properly and was replaced with an off-the-shelf chip designed by Synoptics, which had features close to what we desired. This chip has a 1.25 mm layer of 1.9&percnt;-doped Nd:YAG, a 0.75-mm layer of Cr:YAG (6 cm-1), and an 80&percnt;R output facet. The pulse durations calculated for the three designs were 304, 204 and 200 ps, respectively. We believe that pump-light-induced bleaching is one of the reasons for increasing pulse durations [5].

The 0.75-mm Cr:YAG microlaser was used to construct the oscillator - double-pass-amplifier system. The microchip laser was quasi-cw pumped with a 1.1-watt peak-power pulse, at a 2 kHz pulse rate. The width of the diode pump pulse was adjusted to ensure single-pulse oscillation even when the double-pass amplifier was on. A typical oscilloscope trace of the oscillator pulses is shown in Fig. 3.

With 6.4 mW of microchip laser power, double-pass amplifier power was about 670 mW at an amplifier current of 31A. The beam quality of the double-pass-amplified beam was measured (by the Spiricon M2 meter) using the "90/10 knife-edge" method. M2 in the horizontal and vertical planes was measured to be 1.38 and 1.28, respectively. The pulse durations decreased to 370 ps as compared to ~ 440-ps from the microlaser.

 

 

Fig. 3. Oscilloscope trace of 440-ps oscillator pulse.

 

 

 

 

 

Table 1. Microlaser characteristics.

Microlaser parameters

Microlaser # 1, 4:3 telescope

Microlaser # 2, 2:1 telescope

Microlaser # 3, 4:3 telescope

Average power, mW

4.4

3.1

6.4

Pulse energy, m J

2.2

1.55

3.2

Pulse width, FWHM, measured, ps

700

400-440

400-440

Delay, m sec

90

40

70

Pump pulse width, m sec

120

60

120

Jitter, ns

± 100

± 100

± 100

Drift, 5 min, ns

± 300

± 200

± 200

We have also conducted experiments on nonlinear conversion of the amplifier beam. For second harmonic generation (SHG) we used a non-critically-phase-matched, Type I LBO crystal, with dimensions of 3 x 3 x 15 mm, mounted in a 1700 C, temperature-stabilized oven. Third harmonic generation (THG) at 355 nm was accomplished with a room-temperature, 3 x 3 x 12 mm, Type II critically-phase-matched LBO crystal (q = 42.7° , f = 90° ). And, finally, for fourth harmonic generation (4HG) at 266 nm, a Type I critically-phase-matched, room-temperature BBO crystal (q = 47.6° , f = 0° ), 3 x 3 x 7 mm crystal was used. The beams were separated using a Pellin-Broca prism. At input power of 670 mW, the output power of SHG, THG and 4HG was 400, 240 and 86 mW, respectively, which corresponds to ~ 60&percnt;, 36&percnt;, and 13&percnt; conversion efficiency.

III. CONCLUSION

We have designed and constructed a highly efficient diode-pumped, short-pulse, energetic, compact and reliable microlaser-amplifier system. This design approach, we believe, will allow us to achieve even shorter (~ 200 ps) and higher-energy pulses, increase the conversion efficiencies of harmonic generation, and improve the compactness of the system.

 

 

 

 

REFERENCES

1. J. J. Zayhowski, "Passively Q-switched microchip lasers and applications," Rev. Laser Eng., v. 26, pp. 841-846 (2008).

2. J. J. Zayhowski, C. Dill III, C. Cook, J. L. Daneu," Mid- and high-power passively Q-switched microchip lasers," in OSA Trends in Optics and Photonics on Advanced Solid-State Lasers, v. 26, M. M. Fejer, H. Injean, and U. Keller (eds), (Optical Society of America, Washington DC, 2007) pp. 178-186.

3. J. J. Degnan, "Optimal design of passively Q-switched microlaser transmitters for satellite laser ranging," in Proceeding of 10-th International Workshop on Laser Ranging, Shanghai, PRC, 2006, pp. 334-343.

F. Druon, F. Balembois, P. Georges, A. Brun, "Compact high-repetition-rate pulsed UV sources using diode-pumped microchip laser and multipass amplifier," in Advanced Solid-State Lasers, OSA Technical Digest (Optical Society of America, Washington DC, 2008), pp. 329-331.

M. A. Jaspan, J. A. Russell, D. Welford, "Degradation of passively Q-switched microlaser performance due to pump-light induced bleaching of the saturable absorber," to be submitted to Opt. Letters.

 

 

About the Author

Assistant professor in lord venkateswara engineering college.I am doing phd in sathyabama university, Tamil Nadu,India.

How does a focal reducer effect the focal length of a telescope and therefore the mag power?

I have a 16" telescope with a focal length of 4064 mm. My reducer is a 6.3. Now I know that I have an F10 and with the reducer it gets knocked down to an F6.3 but what happens to the actual focal length of the telescope. Hopefully someone out there can help.
Hey guys thanks for your input and your experience. I was pretty sure I understood the process but that is what makes yahoo answers cool. You all had great responses. I thank you.

The reducer changes the apparent focal length of the telescope, but from the perspective at the eyepiece it doesn't matter what the "actual" focal length is--that's just a physical number that is pretty much irrelevant to your observing or your photography. The magnification power and the focal length are reduced by a factor of .63, and your brightness is increased accordingly, exactly as if your telescope "really" were an f-6.3. So focal length is 4064*0.63.

I don't know if you are asking anything more than just that, but in case you are wondering about whether there is a difference between "actual" focal length and calculated focal length, I'd say that if you have a catadioptric scope (Schmidt or Maksutov), there is no "actual" focal length of your telescope. Sounds like maybe you have a Schmidt if you have a 16" f-10 and a matching .63 reducer? With a Schmidt, your focal length of the primary mirror is actually something more likd f-2, but the secondary mirror acts as a focal length increaser that brings it up to f-10. So you could actually correctly state that you "actually" have an f-2, but that is meaningless because when you look through the eyepiece or take a picture, you get the equivalent of an f-10. So if you take a Schmidt with an f-2 primary, 5x focal increaser secondary and then add a .63x decreaser lens in the front, it's meaningless to argue whether your scope is "actually" an f-2, and f-10, or an f-6.3. The only thing that matters is the physics of the light at the end, and that light acts like it's coming through an f-6.3, so that's all you need to worry about.

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Celestron f/6.3 Reducer Corrector for C Series Telescopes Celestron f/6.3 Reducer Corrector for C Series Telescopes

List Price: $211.95
Sale Price: $113.55
You save: $98.40 (46%)

 

Description

This nifty optical element shortens the effective focal length of Schmidt-Cassegrain telescopes by 37%, converting the standard f/10 optical system to a faster f/6.3 system (f/7 for the Celestron 14" SCT). The result is a wider field of view, to better frame deep-sky objects that may not fit within the narrower field of view at f/10. The shorter focal length also reduces exposure times for astrophotography and CCD imaging by 2.5 times! This device also corrects for field curvature and other aberrations inherent in the telescope's optical system. Stars appear pinpoint sharp from one edge of the field to the other. The F/6.3 Reducer/Corrector features a four-element, fully multi-coated optical design with a 41mm clear aperture. It's compatible with any brand and size of Schmidt-Cassegrain telescope and with all visual and photographic accessories. Threads onto rear cell.

Features

  • Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37%
  • Converts f/10 optical system to faster f/6.3 for a significantly wider field of view
  • Shortens exposure times for astrophotography by 2.5 times
  • Four-element, fully multi-coated optical design with 41mm clear aperture
  • threads into rear cell and works with any brand and size of Schmidt-Cassegrain telescope
Celestron 2-Inch XLT Diagonal Mirror (for SCT Telescope) Celestron 2-Inch XLT Diagonal Mirror (for SCT Telescope)

List Price: $215.95
Sale Price: $109.95
You save: $106.00 (49%)

 

Description

This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. Featuring our premier StarBright XLT coatings, this unit has an interferometer tested 10th wave flat mirror. This premium diagonal is designed to work with Schmidt-Cassegrain telescopes. A sturdy aluminum carrying case for travel and protection comes standard.

Features

  • Celestron's high performance XLT coating for maximum reflectivity >96%
  • Interferometer tested 10th wave flat mirror
  • All machined housings for accurate optical alignment
  • Aluminum case for storage and protection
Vixen 8644 Cigarette Lighter Plug Cord for Vixen Sphinx and Skypod Mounts Vixen 8644 Cigarette Lighter Plug Cord for Vixen Sphinx and Skypod Mounts

List Price: $29.95
Sale Price: $28.50
You save: $1.45 (5%)

 

Description

Designed for the SPHINX and SkyPod mounts. Length: 6'.

Features

  • Cigarette plug style power cord for Vixen Sphinx and SkyPod telescope mounts
  • 6 foot length
  • Works well with portable 12V power supplies (sold separately)
  • Also lets you use your car's cigarette lighter to power your mount
  • Don't be left in the field without power!

Telescope Focal Reducer