Ccd Imaging Eyepiece
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Tele Vue NEW Up-Dated NP127is Imaging System 5" f/5.2, 4-Element APO Refractor Telescope Optical Tube Assembly, Ivory, New 10:1 focuser pinion assembly made for Tele Vue by Starlight Instruments. New lens prescription delivers smaller spots sizes over a broader wavelenght range.
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DescriptionConcept: CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. Tele Vue knew it's APO objectives were up to the challenge, & with the proper tweaks would be extraordinary tools for the imager. With Tele Vue Imaging System (is) telescopes, they have refined their instruments & optional equipment beyond anything a CCD chip has seen.For 25 years, Tele Vue has pushed the boundaries of APO refractors, & eyepieces, to the recognized pinnacle of performance. They were gratified but not surprised that Backyard Astronomer's Guide said of the NP101: "optics don't get any better than this." No wonder "Sky and Telescope" rated the NP101 tops & selected it as the test instrument for its landmark review of the SBIG STL-11000 CCD camera. The "is" versions of the Tele Vue- 60, 102i, NP101 & NP127 retain the exemplary wide field & planetary visual capability while adding new features to make imaging easier & more flexible.Tele Vue-NP101is Tele Vue-NP127is:Tele Vue was determined to make the NP series optically, mechanically, & functionally as perfect as possible for imaging up to 50mm diagonal chips with o ut penalty to its near ideal visual operation.How? By applying the developments created for the Tele Vue-60is to the new NP101is and NP127is & then going beyond. The NP101 (540mm, f/5.4, 4") & NP127 (660mm, f/5.2, 5") maintain their optical specifications yet with redesig Features
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Features And Controls Of Your Dv Camcorder
The central part of a DV camcorder is the CCD, or Charge Coupled Device. This sensor creates a video picture by recording the light intensity to recognize an image or shape, along with the color levels to reproduce a full color picture.
There are several tape based DV camcorders that have both color eyepiece viewfinders and a flip out TFT LCD screen to view the action as well as the previous recorded footage. Most tape-less models however, only offer the TFT screen to preview your captured video and to view while you make a recording.
When you need to get closer to the action, a zoom lens can be a great feature. Don't get swayed by the digital zoom figure however; as no matter how large it may be, you should always base your final decision on the optical zoom.
The optical zoom will give you a true indication of the video image, where digital zooms interpolate the available pixels to zoom in on an image. Optical zooms will normally range around the 10X mark, with digital zooms ranging from 100X and above.
The auto focusing systems are great as well, although manual focus options can be ideal for low light or when focusing on a subject against a landscape. Being available on most video cameras, the manual focus control can be found as either a ring on the lens or as a dual button system on the body.
Most video cameras these days will provide a tilting feature in the camera itself, although this feature should be avoided unless you don't intend to edit the video on a computer. The title effects on many cameras are quite limited and cannot be removed afterwards.
Almost all new high definition video cameras will use a rechargeable Li-ion battery, even though a spare battery might be useful as the batteries are unique to each camcorder maker and normally each model.
Most of the latest cameras allow you to capture digital still images onto a removable flash memory card. The most popular media is SD or MMC, but Sony and Samsung cameras often capture to a memory stick.
If your video camera doesn't offer still image capabilities, you can always perform a capture of the screen in your editing program. Always remember that the image resolution when capturing a still this way will always be 640X480, which is actually less than 1 MB, or Mega Byte.
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CCD vs Film. Is not it cheating CCD images?
Hours guiding eyepiece has been replaced by push astrophotography. Is this cheating?
Galileo decided to use a telescope (an instrument designed to search for other ships at sea, or to identify lines for navigation) for astronomy. Until then, astronomers had to figure everything from what their eyes saw directly. Did Galileo trap? [Some people thought I did] Thousands of years before that, some astronomers began to write their comments so they can be used by others to discover the very long cycles. For example, the Greeks (and many others) had determined the cycle of precession of a very good approximation of 26,000 years ago. This is clearly impossible unless you pass on some observations from generation generation. Record the information: that cheating? A few decades ago, we had to go on high mountains, where it is cold and oxygen is rare. We to sit in the cage of an "observer" to guide the telescope. [My wife actually sat in the cage of the observers of the largest telescope equipped with a: a telescope] m 6. Normally, because of my health that I can do that ... in fact, I'm just lets you see photos of the mountains. However, a few years ago, I had the opportunity to make an observation of four galaxies using the Internet, from the comfort of my basement. Cheating? To collect scientifically valid data using a CCD requires a good understanding of all errors that creep in all the protocols and to avoid any of these errors or at least, to correct (bias, DM dark, apartments ...). All that work and the understanding makes it sound like film photography was cheating (when is the last time that "split" a sheet film for its "flat" exposure?) --- This is only a survey, put me down as "no"
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Tele Vue NEW Up-Dated NP127is Imaging System 5" f/5.2, 4-Element APO Refractor Telescope Optical Tube Assembly, Ivory, New 10:1 focuser pinion assembly made for Tele Vue by Starlight Instruments. New lens prescription delivers smaller spots sizes over a broader wavelenght range.
List Price: |
DescriptionConcept: CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. Tele Vue knew it's APO objectives were up to the challenge, & with the proper tweaks would be extraordinary tools for the imager. With Tele Vue Imaging System (is) telescopes, they have refined their instruments & optional equipment beyond anything a CCD chip has seen.For 25 years, Tele Vue has pushed the boundaries of APO refractors, & eyepieces, to the recognized pinnacle of performance. They were gratified but not surprised that Backyard Astronomer's Guide said of the NP101: "optics don't get any better than this." No wonder "Sky and Telescope" rated the NP101 tops & selected it as the test instrument for its landmark review of the SBIG STL-11000 CCD camera. The "is" versions of the Tele Vue- 60, 102i, NP101 & NP127 retain the exemplary wide field & planetary visual capability while adding new features to make imaging easier & more flexible.Tele Vue-NP101is Tele Vue-NP127is:Tele Vue was determined to make the NP series optically, mechanically, & functionally as perfect as possible for imaging up to 50mm diagonal chips with o ut penalty to its near ideal visual operation.How? By applying the developments created for the Tele Vue-60is to the new NP101is and NP127is & then going beyond. The NP101 (540mm, f/5.4, 4") & NP127 (660mm, f/5.2, 5") maintain their optical specifications yet with redesig Features
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Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Sale Price: $499.99 |
DescriptionI have been looking for quick "setup and go" telescope of superior quality for a few years, and I believe I have found that scope in the Orion 80ED. This is an amazingly compact, well performing little instrument that combines all the features I have been looking for in a single package. The only word for the optics is superb. When using the Orion 80ED to view the Moon and Planets, with magnifications at or below "Dawes Limit" (a theoretical limit to the maximum power of any telescope, 160 power in this case), I saw no false color of any kind. The contrast was excellent, and the views of the Moon and planets were tack sharp. As I increased the power beyond "Dawes Limit," I noted only the slightest hint of false color, a very slight drop in contrast, and the tiniest softening of the image. Saturn looks like a small ringed jewel sitting on black velvet, the cloud belts of Jupiter are clear colorful and sharp, and the Moon is nothing short of amazing. Deep Sky Objects show well with this instrument as well--I was able to easily see structure in the Great Nebula in Orion, and detail in the Andromeda Galaxy. The Optical Tube Assembly (OTA), is one hundred millimeters in diameter, a bit larger than most instruments of this size. The focuser is a 2" aluminum Crayford-type focuser that accepts 2" or 1 ¼" eyepieces or accessories. I can use a 2" eyepiece for a wider field of view than I would normally get using the standard 1 ¼" eyepiece, this makes for fine viewing of extended objects such as Nebula and Open Star Clusters. The focusing mechanism is smooth and silky, and incorporates a focus lock along the bottom of the focuser assembly. The rubber coated 42 mm (1.6") focus control knobs on each side of the drawtube make for a good grip and easy control of focus during photography or viewing. The telescope focuser easily supports a 35-MM camera or an ST-7 CCD camera using an optional T-Ring and two-inch adapter. The Dew shield is removable; this shortens the telescope's overall length from 23" to 18.75" which makes for easy storage and portability. A set of mounting rings is available from Orion as well as from third party vendors, allowing me to quickly mount the telescope on either a small Equatorial platform, or piggyback it on my much larger Nexstar11GPS telescope. This little telescope is built well, looks nice, performs well, and is small enough to take on the road. --Dave Cole Pros Small and lightweight Affordable Superb optics Well constructed 1 ¼" eyepiece adapter included Cons Tripod mounting block could be a bit larger Aperture is only 80 mm Does not come with a carry case We love those premium apo refractors as much as the next guy. We just don't think you should have to work a second job or put the family heirlooms on eBay to own one. Now you won't, thanks to our amazingly affordable 80mm ED refractor. Its multi-coated 80mm objective doublet contains one element crafted from extra-low-dispersion FPL-53 glass. Images are virtually free of chromatic aberration! With a focal length of 600mm (f/7.5), the "ED80" is wonderfully suited for visual applications on both solar system and deep-sky objects as well as for prime-focus astrophotography and CCD imaging. Sold as optical tube assembly only, without accessories. Finished in gunmetal gray metallic enamel. Compatible tube rings are #7371, sold separately. One-year limited warranty. Features
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Celestron NexImage Solar System Imager
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DescriptionAmazon.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 The Celestron NexImage Solar System Imager is a complete CCD solar system imager capable of producing high quality planetary images with greater light sensitivity and color fidelity than comparable CMOS imagers. -- The NexImage, along with the NexImage software package, can bring out tremendous detail and reveal a final image that will rival those taken with astronomical CCD cameras costing thousands of dollars more. -- **View and capture live video on your computer screen -- **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 -- **Easy to follow quick start instructions and tutorial with sample video file that will have you producing quality images your first night out -- ** -- Camera control software allows you to manually change the gain, contrast, exposure time, frame rate and color saturation using your PC -- With the 1.25" adapter barrel, the NexImage is compatible with most any telescope. In addition, the 1.25" adapter is threaded for standard eyepiece filters and can be removed and replaced with optional focal reducer lens, adding greater versatility. -- Features
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Orion StarShoot Solar System Color Imaging Camera IV
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DescriptionAstro-imaging is an immensely rewarding hobby, but the challenges involved can seem difficult to beginners. Some of the best objects to start on are the planets of our own solar system and the Moon. Big, bright targets like Jupiter, Saturn, Mars and the Moon make wonderful models as they strut their way around the Sun on their celestial catwalk. The planets are relatively easy to locate and identify in the night sky, so solar system objects prime imaging targets for all astro-imagers. The Orion StarShoot Solar System Color Imager IV is equipped with features that make it easy to take your own images of objects in our solar system. Its 1/3-inch format CMOS imaging sensor with a 1280 x 1024 pixel layout can take sharply detailed planetary and lunar images. Each pixel is a mere 3.6µm x 3.6µm in size for exceptional image resolution in 24-bit RGB color. Since the 8-bit output StarShoot Solar System Color Imager IV is progressive scan, all pixels will be used for each and every exposure. At full 1280 x 1024 resolution, you can capture up to 15 frames per second. By stacking multiple exposures to create a single picture, you can increase image detail significantly. Features
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Televue PMT2200 2x Powermate 2-1.25 inch
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DescriptionThis model is nearly parfocal (unlike the Big Barlow / Interface combination), so it can be effectively used in our 2" diagonals. Its performance is excellent with every 1¼" or 2" eyepiece we make (yes, even the 31 Nagler Type 5!). Both the 2" eyepiece holder and the special 2"-1¼" low-profile adapter use brass clamp rings for secure, non-marring operation. And it also has a very unique feature: you can unscrew the 2" eyepiece housing and screw on a special T-ring adapter for solid, compact attachment of CCD or camera equipment. Features
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Televue 4x Powermate 2-1.25 inch
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DescriptionTele Vue Barlows: "An Optically Perfect Window " Properly designed Barlows do wonderful things. First, they amplify power while retaining the eyepiece's eye-relief. Second, they slow the telescope's f/#, which improves eyepiece sharpness. Third, the designer can introduce compensations for eyepiece aberrations. The 4X Powermate Barlow is a 4-element parfocal, compact amplifying lens system. POWERMATE consists of a negative achromatic doublet plus a positive "pupil-correcting" doublet. While it looks and functions like a Barlow, your eyepiece will operate with pupil locations where the designer intended, avoiding mismatch problems. POEWRMATE optimally mates its power to your eyepieces. No additional "interface lens" is needed, since POWERMATES have it built-in. In addition to full multi-coating, POWERMATE includes other Tele Vue special touches such as a safety undercut on the chrome barrell, and captive lock screws that can't fall out. Tele Vue's 100% QC program at f/4 insures that POWERMATE will add dramatic power (and NOTHING ELSE) to your favorite eyepieces. If, for example, you own a 22mm Panoptic, you'll have the power of a 5.5mm with the 4X POWERMATE! The 2" 4X POWERMATE is threaded for 48mm filters. Dobsonian/Newtonian owners using Tele Vue's Paracorr coma corrector should place the 2.5x or 5x POWERMATE (or Tele Vue 2x or 3x 1-1/4" Barlows) into the Paracorr's 1-1/4" adapter (i.e., between the Para Features
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