Refracting Telescope
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Terra Star 60mm Refracting Telescope with Carry Bag
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Description"The Meade NG-60 60mm refracting telescope is an excellent first telescope for the beginning astronomer or the casual observer of land or sky. Supplied complete with two eyepieces, a fine achromatic objective lens, a fully adjustable aluminum tripod, and the modern, highly functional Meade NG-series altazimuth mounting, the NG-60 easily surpasses commonly available, lower-quality introductory telescopes. The Meade NG-60 altazimuth refractor also makes an excellent land-view instrument for the birdwatcher, the naturalist, or the homeowner with a view. In conjunction with the single-arm mount are precision manual slow-motion controls on each axis, to permit smooth telescope motion. All of the major planets except Pluto are easily observable through the NG-60. Study Saturn and its ring system; the primary cloud belts of Jupiter as well as its four major satellites; the Moonlike phases of Mercury and Venus; prominent features on Mars; and the starlike images of the distant Uranus and Neptune. The Moon stands out in stark, almost three-dimensional detail: craters, mountain ranges, and fault lines. You'll be able to see hundreds of nebulae, star clusters, double and multiple stars, and variable stars in our galaxy, plus dozens of other galaxies as well. " Features
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A Look At India's Galileo Telescope
One telescope maker that has been making a name for itself over the last few years is Galileo Telescope. This company, based in India, prides itself on offering excellent telescopes and one-on-one service with knowledgeable people who use the telescopes themselves. This allows Galileo Telescope to not only offer excellent optical equipment, but also excellent customer service.
Begun in India in 1989, Galileo Telescope began its life by offering telescopes for Indian amateur astronomers who need a quality telescope for their stargazing needs. Determined to set themselves apart from the rest of the market, Galileo Telescope came out with an 8-inch telescope, which is rather large by Indian standards. And, even more, Galileo's first telescope was easy to use, allowing even novice astronomers to learn it quickly.
With this success under their belts, Galileo Telescope continued to innovate. First, they developed a reliable, easy to operate mount that allowed amateurs to have a stable platform for their telescopes. Then they stretched out to create larger telescopes for deeper explorations of space, while also creating portable models that made for easier carrying and transportation.
Additionally, Galileo Telescope is the only Indian company to offer its customers Dobsonian telescopes. This large, rugged and reliable design is well known and familiar to amateur astronomers, as it makes large-aperture telescopes an affordable option for the backyard skywatcher. While made from a simple, Newtonian design, its simplicity allows it to be a very reliable and very powerful option for people who want to peer into the vastness of space.
For those who want the challenge of building their own telescopes, Galileo Telescope also offers an excellent selection of lenses, mirrors, eyepieces that will allow amateurs to create a telescope to their own specifications and give themselves the view that they uniquely desire. And, for the nervous novices who want a little more help with their telescope building adventures, Galileo also offers telescope kits that will allow them to build their own telescope and learn the inner workings of optical instruments in a less risky situation.
In addition to their standard line of Dobsonian telescopes, Galileo Telescope also offers a wide range of equipment for a variety of needs. Whether it might be a spotting scope, binoculars, a tripod or a refracting telescope, the people at Galileo Telescope are always eager to use their expertise to stretch themselves into new areas. And, as Galileo expands their reach into new realms, rest assured that they are just as committed to crafting some of the finest optics available.
For people who want a telescope that has been created, tried and tested by people who use the optics they offer, Galileo Telescope is an excellent name to trust. They pride themselves on designing and creating excellent telescopes that they are willing to stand behind and support. And with their one-on-one support, they will be able to help anyone who has questions or needs assistance with their products. All of which makes Galileo Telescope a company that amateur astronomers can turn to when they want to turn their eyes to the heavens.
About the Author
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i want to make a refracting telescope guide me?
can i use 10 concave lenses with each 10cm focal length to gain 1cm focal length for the eye piece?doesnt it destroy the image?and is it good for the telescope to be f/15?the image wouldnt be dark?
If you're trying to use concave lenses for the eyepiece, it sounds like you are trying to make a Galilean refractor. This is about the poorest performing telescope there is, with an extremely narrow field of view. You're much better off using a convex lens for the eyepiece. What are you using for the objective lens? If it isn't an achromat, you will need a lot higher focal ratio than f/15 to reduce chromatic aberration.
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 Telescope MEADE Equatorial Refracting Telescope  US $50.00
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 60 mm Refracting Telescope US $198.00
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 Meade Altazimuth Refracting Telescope Model 226 60mm 24 Made in Japan US $27.99
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Terra Star 60mm Refracting Telescope with Carry Bag
List Price: |
Description"The Meade NG-60 60mm refracting telescope is an excellent first telescope for the beginning astronomer or the casual observer of land or sky. Supplied complete with two eyepieces, a fine achromatic objective lens, a fully adjustable aluminum tripod, and the modern, highly functional Meade NG-series altazimuth mounting, the NG-60 easily surpasses commonly available, lower-quality introductory telescopes. The Meade NG-60 altazimuth refractor also makes an excellent land-view instrument for the birdwatcher, the naturalist, or the homeowner with a view. In conjunction with the single-arm mount are precision manual slow-motion controls on each axis, to permit smooth telescope motion. All of the major planets except Pluto are easily observable through the NG-60. Study Saturn and its ring system; the primary cloud belts of Jupiter as well as its four major satellites; the Moonlike phases of Mercury and Venus; prominent features on Mars; and the starlike images of the distant Uranus and Neptune. The Moon stands out in stark, almost three-dimensional detail: craters, mountain ranges, and fault lines. You'll be able to see hundreds of nebulae, star clusters, double and multiple stars, and variable stars in our galaxy, plus dozens of other galaxies as well. " Features
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Celestron 21061 AstroMaster 70 AZ Refractor Telescope
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DescriptionCelestron AstroMaster 70AZ 45 - 90X Refractor Telescope. Affordable, powerful, lightweight... the perfect choice for amateur astronomers and backyard stargazers! Proving once again that you don't need NASA's budget to see the stars. If you're aiming to get started in astronomy, the AstroMaster 70AZ's blend of quality optics, entry-level usability and affordable price is tough to beat. It's lightweight, easy to haul to the darker skies found outside city limits, and requires no tools to set up. For celestial and "earthbound" observation on a dime, the Celestron AstroMaster outshines the rest! Specifications: Pan-handle altazimuth style mount controls easily for smooth pointing; perfect for terrestrial and celestial viewing; 70 mm aperture size; Includes 20 mm eyepiece for 45X magnification, 10 mm eyepiece for 90X; Refractor optical design; Fully-coated glass optics with high-transmission coatings for enhanced brightness and clarity; Built-in StarPointer red laser for easy targeting; Comes with The Sky X Planetarium software, featuring a 10,000 object database to get you started; Focal length: 900 mm; Focal ratio: 12.86; Limiting stellar magnitude: 11.7; Light-gathering power: 165X; Angular F.O.V.: 1.1 degrees; Linear F.O.V.: 58'; Optical tube length: 36"; 1.25" erect image diagonal; Weighs 18 lbs. Includes aluminum tripod with 1.25" steel tube legs. Order yours today! Celestron AstroMaster 70AZ 45-90X Refractor Telescope Features
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CELESTRON Powerseeker 50 Refractor Telescope
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DescriptionThe Celestron® PowerSeeker 50 telescope is a great way to open up the wonders of the universe to the aspiring astronomer. It's portable yet powerful with ample optical performance to excite any newcomer to the world of amateur astronomy. Features
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Meade 20218 NG-70SM 70mm Altazimuth Refractor Telescope
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DescriptionMEADE 20218 NG-70SM 70mm Altazimuth Refractor Telescope Meade 20218 NG-70SM 70mm Altazimuth Refractor Telescope Meade's value priced NG-70SM Altazimuth Refractor is an affordable entry level telescope that features an easy to use Altazimuth mount with slow motion controls for precise tracking. The complete package includes a sturdy metal tripod, a red dot viewfinder, two 1.25 inch eyepieces and a star diagonal, and a software DVD with instructional video. The NG-70SM Refractor Telescope comes disassembled in a compact box, but the instructional DVD video guides you through all the steps required for assembly. Go ahead and try it out in the daytime, that's the best time to align the red-dot finder scope while looking at a distant tree or telephone pole. The optics of Meade's NG-70SM produce an image that is right side up but the diagonal mirror reverses the image left-to-right. That's no problem most of the time, but an optional correct image diagonal is available. The low power 25mm eyepiece produces a magnification 28X which is just right for spotting the Moon or the planets, while the 9mm eyepiece (78X magnification) can be used to zoom in for more detail. The MH25 eyepiece at 28X shows a lovely view of the Lunar disk in a dark sky, while the MH9 eyepiece at 78X shows literally hundreds of craters on the Moon and begins to show the rings of Saturn and the cloud bands of Jupiter. For even better views it's easy to add better eyepieces. My best view of Saturn, for example, came with an optional 6.4mm Super Plossl eyepiece, about 110X magnification. The Altazimuth mount included with Meade's NG-70SM is lighter and easier to use than an Equatorial mount, yet the slow motion knobs make it easy to keep objects in view. The rotation of the Earth causes the Moon or planets to appear to drift out of the eyepiece, but the slow motion knobs make it easy to keep the telescope on target, even with a high power eyepiece. The telescope is sensitive to vibration, however, so a high power eyepiece can be difficult to focus. Meade's NG-70SM is a good entry level telescope at a very good price. The optics are good, the Altazimuth mount is easy to assemble and easy to use, the instructional DVD includes a nice Lunar Atlas as well as planetarium software, and it's easy to add better eyepieces to improve your view of the planets. –Jeff Phillips Pros: Light and easy to use Altazimuth mount includes slow motion knobs Easy to add better eyepieces Instructional DVD included; Cons: MH eyepieces have narrow field of view Vibrates while focusing at high power Features
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The Schupmann Telescope
Sale Price: $29.95 |
DescriptionHere for the first time is a comprehensive discussion of the design and fabrication of a high resolution instrument that is totally free of harmful color defects. |
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Choosing and Using a Refracting Telescope (Patrick Moore's Practical Astronomy Series)
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DescriptionChoosing and Using a Refracting Telescope has been written for the many amateur astronomers who already own, or are intending to purchase, a refracting telescope â perhaps to complement their existing arsenal of larger reflecting telescopes â or for the specialist who requires a particular refractor for serious astronomical applications or nature studies. Four hundred year ago, during the winter of 1609, a relatively unknown Italian scientist, Galileo Galilei designed a spyglass with two crude lenses and turned it skyward. Since then, refractors have retained their dominance over all types of reflector in studies of the Moon, planets and double stars because of the precision of their optics and lack of a central obstruction in the optical path, which causes diffraction effects in all commercially-made reflectors. Most mature amateur astronomers got started with a 60mm refractor, or something similar. Thirty years ago, there was little choice available to the hobbyist, but in the last decade long focus crown-flint achromats have moved aside for some exquisitely crafted apochromatic designs offered by leading commercial manufacturers. There has been a huge increase in the popularity of these telescopes in the last few years, led by a significant increase in the number of companies (particularly, William Optics, Orion USA, StellarVue, SkyWatcher and AstroTech) who are now heavily marketing refractors in the amateur astronomical magazines. In Choosing and Using a Refracting Telescope, well-known observer and astronomy writer Neil English celebrates the remarkable history and evolution of the refracting telescope and looks in detail at the instruments, their development and their use. A major feature of this book is the way it compares not only different classes of refractor, but also telescopes of each class that are sold by various commercial manufacturers. The author is perhaps uniquely placed to do this, having used and tested literally hundreds of different refracting telescopes over three decades. Because it includes many diverse subjects such as imaging with consumer-level digital cameras, imaging with webcams, and imaging with astronomical CCD cameras â that are not covered together in equal depth in any other single volume â Choosing and Using a Refracting Telescope could become the ârefractor bibleâ for amateur astronomers at all levels, especially those who are interested in imaging astronomical objects of every class. |
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BARSKA 40070 Starwatcher Compact Refractor Telescope with Table Top Tripod And Carrying Case
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DescriptionBarska 300x Starwatcher Refractor Telescope for aspiring astronomers... SAVINGS PRICED! Everything you need to get your start in astronomy! The Barska 300x Starwatcher Refractor Telescope is as powerful as it is easy to set up and includes everything necessary to begin the adventure of a lifetime including telescope, finderscope, eyepieces, mount and tripod. You also get the new beginner's version of the highly popular Deepsky Astronomy Software featuring a searchable database of over 10,000+ objects including, nebulae, star clusters, double stars, variable stars, and other types. Here's the full details: Big, light-gathering 70 mm objective lens; All glass coated optics for enhanced image brightness; Maximum magnification: 300x; Focal length 400 mm; 1.5x, 45 degree diagonal erecting eye for easy use; Interchangeable SR4 and K20 eyepieces with a 3x Barlow lens to increase viewing power; Rack and pinion focuser for sharp imaging; 5 x 24 finder scope makes targeting objects easy; Engineered with smooth functioning mounts; Sturdy tabletop tripod; Includes Beginner's Edition Deepsky Astronomy Software. with a searchable database of over 10,000+ objects including, nebulae, star clusters, double stars, variable stars, and other types... Simply load it on to your PC and begin your journey to the stars and planets! Approx 4 1/2 lbs.; Reach for the stars! Order Today! Barska 40070 300x Starwatcher Refractor Telescope An ideal entry-level telescope for amateur astronomers, the Barska Starwatcher 300-power telescope brings you closer than ever to the stars and planets. The refractor telescope is equipped with such features as coated glass optics for enhanced image brightness, interchangeable eyepieces with 3x Barlow lenses for increased viewing power, and smooth-functioning mounts. For good measure, Barska added a beginner's version of the highly popular Deepsky Astronomy software, which is packed with a searchable database of more than 10,000 objects, including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on your PC and begin your journey to the stars and planets. Bundled with a sturdy adjustable tripod and a soft carrying case, the telescope carries Barska's limited lifetime warranty. Specifications Max power: 300x Focal length: 400mm Finder scope: 5x24 Draw tube: 1.25 inches Eyepiece 1: SR4 Eyepiece 2: K20 Diagonal: 45 degrees Warranty: Limited lifetime About Barska Barska is a worldwide sport optics company with strong brand recognition within the optics industry, with corporate offices in La Verne, California, and warehouses and distribution centers in La Verne and Shanghai, China. Barska offers an extensive line of precision sport optics products, such as binoculars, riflescopes, spotting scopes, and telescopes. The product range has been designed and built with the latest optical technology, allowing users to enjoy all their favorite leisure time outdoor activities, including bird watching, outdoor observation, hunting, fishing, stargazing, concerts, and sporting events. The Barska 40070 Starwatcher Compact Refractor Telescope with Table Top Tripod and Carrying Case is an ideal telescope for the aspiring amateur astronomer. Ideal for students or those interested in learning more about the night sky, the 70mm objective lens can zoom up to 300x power. Use one of the interchangeable eyepieces with a 3x power Barlow lens for increased viewing capability. A pan-head mount and tripod is included with the telescope along with a handy carrying case. Take this portable telescope outdoors at night and the stars will open up before your eyes. Features
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Celestron 52229 60mmRefractor Zoom Spotting Scope
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DescriptionCelestron 20-60x60mm Zoom Refractor Straight Spotting Scope, Green 52229 Features
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Meade NG-70 70mm/2.8 inch Altazimuth-Mount Achromatic Refractor Telescope
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DescriptionSome of the worldâ?TMs top astronomers got started with a telescope just like this one â?" and so will you. A quality refracting telescope for land or sky viewing. It's perfect for observing the Moon, planets and land objects like mountains, trees and wildlife. Features
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GeoSafari Jr. Talking Telescope
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DescriptionWith the GeoSafari Talking Telescope, kids get an up-close view of 12 animals and eight space-age phenomena. They can hear cool facts or test their knowledge in fun quiz games. Features beautiful images from NASA, built-in storage for all 20 slides, detachable telescope (3x magnification) for on-the-go exploring, and battery-saving automatic shut-off. Two motivating game modes - Facts and Quiz - speak 200 fun facts and questions with realistic sound effects. Requires four "AA" batteries (not included). Measures 11.1" x 10" x 8.4". Features
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