dobsonian telescopes for astronomy
dobsonian telescopes for astronomy
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Celestron 21024 FirstScope Telescope
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DescriptionIn 1609, world-renowned Italian scientist, Galileo Galilei, introduced an elementary telescope to the growing astronomy community, which sparked interest into the mysterious night sky for centuries to come. Four centuries later, in celebration of the International Year of Astronomy 2009, Celestron offers the portable FirstScope Telescope. The FirstScope pays tribute to Galileo Galilei and many of history's most notable astronomers and scientists by displaying their names around the optical tube. Honoring the contributions of these men and women, who brought us one step closer to understanding the universe around us. The FirstScope is a wonderful keepsake for anyone interested in astronomy. This quality Dobsonian style telescope features a 76mm aperture reflector optical tube. FirstScope is an ideal entry-level astronomical telescope. It is very easy to observe with; you simply navigate the night sky by moving the tube in the direction of the desired object, making the viewing experience a snap! The compact design makes it easy enough to take with you on your next outdoor adventure. FirstScope is also stylish enough to be a decorative fixture on your bookshelf or desk. Features
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How do you build a telescope? I need someone to check my answer..?
I am putting up a site called www.howtelescopeswork.com In it, I talk about tips on viewing astronomy, the moon, planets, etc. I have plans that I redrew for a dobsonian telescope, multiple truss tube sizes, building a laser collimator and even a camera barn door mount. I would like any feed back on this before I send it to the printers. I am releasing this because of the year of astronomy! Oh, and don't forget to hit some of the sponser links. This helps pay for the webspace I am using up!
The first thing I looked for isn't there (or I couldn't find it quickly): how to determine the sizes, prices, quality, supplier of your mirrors.
A site map, for easy reference, might be a good idea too.
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Celestron 21024 FirstScope Telescope
List Price: |
DescriptionIn 1609, world-renowned Italian scientist, Galileo Galilei, introduced an elementary telescope to the growing astronomy community, which sparked interest into the mysterious night sky for centuries to come. Four centuries later, in celebration of the International Year of Astronomy 2009, Celestron offers the portable FirstScope Telescope. The FirstScope pays tribute to Galileo Galilei and many of history's most notable astronomers and scientists by displaying their names around the optical tube. Honoring the contributions of these men and women, who brought us one step closer to understanding the universe around us. The FirstScope is a wonderful keepsake for anyone interested in astronomy. This quality Dobsonian style telescope features a 76mm aperture reflector optical tube. FirstScope is an ideal entry-level astronomical telescope. It is very easy to observe with; you simply navigate the night sky by moving the tube in the direction of the desired object, making the viewing experience a snap! The compact design makes it easy enough to take with you on your next outdoor adventure. FirstScope is also stylish enough to be a decorative fixture on your bookshelf or desk. Features
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Orion SkyQuest XT8 Classic Dobsonian Telescope
Sale Price: $349.99 |
DescriptionA powerful and capable telescope, the Orion SkyQuest XT8 Classic Dobsonian is one of our most popular reflectors due to its elegant combination of precision optics, mechanical simplicity, and rock-solid stability. You and your whole family will appreciate the bright, clear views of the night sky provided by the XT8 Classic. The Moon and planets of our solar system like Jupiter, Saturn, and Mars shine brightly in the SkyQuest XT8 Classic, allowing you to inspect them in detail. The XT8's 8-inch aperture is also large enough to gather a significant amount of light from more distant celestial objects for great views of sparkling star clusters, cloudy nebulas, and faraway galaxies. The XT8 Classic Dob is a tremendous value considering the high quality views it provides on such a wide variety of celestial objects. The point-and-view simplicity of the Dobsonian design is not as complicated as an equatorial (EQ) mount and tripod, so with a little practice, your whole family can scan the heavens just like experienced hobbyists. For any astronomer seeking serious adventure, the XT8 Classic Dob has it all! Features
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Telrad Finder Sight
Sale Price: $39.95 |
DescriptionThe easiest way to aim a telescope. The view seen through the window of the Telrad is continuous with the sky around it, not magnified or upside down. Three rings are lighted and appear to lie among the stars. The small ring outlines the Moon-sized area seen in the telescope. The large outer ring outlines the area seen in a standard Finderscope. To point your telescope, just look through the Telrad and move the telescope until the rings are centered on the object. The Telrad is 8 inches long. Weighs 11 ounces and mounts on any telescope without drilling any holes. It unlocks from its base for separate storage. Requires 2 AA batteries (not included). Features
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Orion SkyQuest XT12 IntelliScope Dobsonian Telescope With Ob
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DescriptionThe XT12 IntelliScope takes big-aperture astronomy to a new level of performance and user-friendly fun. With design ingenuity and technical sophistication that make competing models yesterday's news, it will wow even the most star-savvy enthusiast. It's prodigious 305mm (12.0"), Pyrexparabolic primary mirror pulls down 44% more light than 10" optics and 126% more than 8" optics. What's more, the XT12 is an IntelliScope! Which means you can just plug the optional IntelliScope Computerized Object Locator into the scope's base and you're ready to find and view any of 14,000 celestial objects with the push of a button or two. Sound easy? It is. If you are ready for some outrageous aperture, then get the smartest big scope to come along in years -- the SkyQuest XT12 IntelliScope. Features
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Orion Apex 90mm Maksutov-Cassegrain Telescope
Sale Price: $229.99 |
DescriptionWith a tube length of 11 inches, a 90mm (3.5") precision-polished fully multi-coated meniscus front lens, and solid uncompromising construction. the Apex 90 Compact Mak is a paragon of portability, optical excellence, and durability. Better still, it's one of the most versatile scopes we offer. The Apex 90 delivers bright, high-contrast images, and with a focal length of 1250mm (f/13.9) you also get a generous image scale. It features a built-in 1/4"-20 adapter plate that makes it easy to mount onto a standard photo tripod for viewing grand daytime vistas. Attach a 35mm camera to the scope's visual back (with a T-ring adapter sold separately) and use the whole assembly as powerful telephoto lens for astrophotography and terrestrial shooting. What more could you want? Includes a 25mm Plossl eyepiece, 6x20 finder scope, 45-deg correct-image diagonal, and fully padded carrying case. One-year limited warranty. Features
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Orion SkyQuest XT8 Classic Dobsonian Reflector Telescope
Sale Price: $489.00 |
DescriptionOur classic XT8 isn't just great bang for the buck, it's a veritable explosion of telescope value. It combines powerful parabolic optics with the ultimate in mechanical stability. The SkyQuest XT8 features an 8" parabolic primary mirror that will tease out detail in nebulas, resolve stars in globular clusters, and reveal subtle structure in galaxies. The enameled steel optical tube sports a 2" aluminum rack-and-pinion focuser that accepts both 2" and 1.25" eyepieces. The tube moves effortlessly on Teflon/UHMW bearings for point-and-view simplicity. Comes complete with navigation knob, 6x30 finder scope, two 1.25" Sirius Plossl eyepieces, eyepiece rack, collimation cap, and hard dust cap. The Orion XT series (available in 4.5", 6", 8", and 10") includes some of my favorite entry-level telescopes, and I recommend this one, the 8", most of all. It's well-made, has very good optics, is relatively cheap, isn't too big or too small, and has a nice look. It features an 8" mirror that gathers enough light to do serious work. The mount is a simple alt-az ("altitude-azimuth," a fancy term that simply means "up-down-left-right") design. There is no automated tracking mechanism. When the object in your field of view starts to go out of sight, you simply push to scope along to re-center it. This may sound inconvenient, but the axes are very smooth and responsive to the touch. To maintain tension, the altitude axis ("up-down") uses an innovative spring system. The springs also allow one hardy and ambitious individual to pick up and move it with one hand (the scope weighs 42 lbs.) A 6X30 finder scope is included to help you get oriented, as well as two eyepieces: a 25 mm Plossl (49X) and a 10 mm Plossl (121X). While these eyepieces are of decent quality, the dedicated observer will eventually want to upgrade to better eyepieces like one of Orion's own Ultrascopics. Regardless of eyepiece though, this scope will let you easily see Saturn's rings (this is something you do not want to miss, trust me), Jupiter and its four moons, dozens of named craters on the moon, and hundreds of star clusters, galaxies (wait until you see the Andromeda Galaxy) and nebulae. It'll keep you busy for years. Yes, you could go to the mall and get one of those cheap little computer-controlled gizmo telescopes. The problem is, those cute little scopes won't do any one thing well, and they don't gather enough light (the XT8's 8" mirror gathers eight to ten times as much light as those little 2"-3" scopes). If you've got a new-found interest in astronomy and want an entry-level telescope, you need look no further--although I should also point out that Orion has an excellent upgraded version of the scope called the "Intelliscope" which features the ability to locate thousands of objects by hand using a separately sold paddle-style controller. And if you can't swing the price of the XT8 Intelliscope, I recommend the slightly smaller XT6, which is also a great deal for the price. --Ed Ting Pros Great scope for the price At 8", the mirror is big enough to do serious work Includes two perfectly serviceable eyepieces Easy re-centering of objects Enough viewing power to keep you occupied for years Cons No automated tracking mechanism The serious sky watcher may need to eventually upgrade to a better eyepiece A not very portable 42 pounds Features
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The Complete Guide to Building Your Own 8-inch Telescope
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DescriptionI've written a book on how to build a telescope just like the one I did so anyone can do it. Every step and every piece is covered in great detail so you can actually build a powerful telescope much more powerful than the one's typically found in department stores. The optics are larger with greater light-gathering power and resolution, enabling you to observe fainter stars, nebulae, and galaxies, and to see finer detail on planets. The high magnifications advertised with department store telescopes are actually useable with this telescope. The eyepieces are larger with a bigger window for the eye to look into, not something you must squint and strain to see anything. The mounting is very rigid and stable, not like the flimsy tripods that move and vibrate to the point you have to move your head around trying to keep up with the bouncing image. The simple design makes the instrument able to be set up in seconds anywhere you bring it. If you follow the instructions in the order given it's almost impossible to fail. The large optics gather 500 times more light than the unaided eye, permitting stunning views of the universe. Amaze your family and friends with the achievement of making a powerful telescope that will yield a lifetime of beautiful views of the heavens. This would make a great parent-child project that would prove very rewarding. Be prepared for sighting celestial objects like you've never seen them before with this truly powerful 8-inch reflecting telescope. I've written a book on how to build a telescope just like the one I did so anyone can do it. Every step and every piece is covered in great detail so you can actually build a powerful telescope much more powerful than the one's typically found in department stores. The optics are larger with greater light-gathering power and resolution, enabling you to observe fainter stars, nebulae, and galaxies, and to see finer detail on planets. The high magnifications advertised with department store telescopes are actually useable with this telescope. The eyepieces are larger with a bigger window for the eye to look into, not something you must squint and strain to see anything. The mounting is very rigid and stable, not like the flimsy tripods that move and vibrate to the point you have to move your head around trying to keep up with the bouncing image. The simple design makes the instrument able to be set up in seconds anywhere you bring it. If you follow the instructions in the order given it's almost impossible to fail. The large optics gather 500 times more light than the unaided eye, permitting stunning views of the universe. Amaze your family and friends with the achievement of making a powerful telescope that will yield a lifetime of beautiful views of the heavens. This would make a great parent-child project that would prove very rewarding. Be prepared for sighting celestial objects like you've never seen them before with this truly powerful 8-inch reflecting telescope. |
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Choosing and Using a Dobsonian Telescope (Patrick Moore's Practical Astronomy Series)
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DescriptionIn the 1960's, American amateur astronomer, John Dobson, designed a revolutionary kind of astronomical telescope featuring a lightweight large-aperture reflecting system on a simple mounting, using the then-revolutionary material called teflon. The design combines simplicity and portability with large-aperture prowess. Thirty years later Dobsonians remain supreme for visually observing faint deep-sky objects and are one of the best-selling large telescopes in the USA and Europe. This popularity is reflected in the recent increase of companies now heavily marketing Dobsonians, in particular, Meade (the "Lightbridge" range), Orion USA (XT Intelliscope series), and Skywatcher (Skyliner and Flextube models). This book is the ultimate guide to buying and using commercial Dobsonians, both 'Econo' and 'Primo' models, with in-depth accounts for the various models (plus accessories) on the market and descriptions of the many innovations that amateurs have made to optimize their telescopes' performance. |
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Orion SkyQuest XT10 Classic Dobsonian Telescope
Sale Price: $529.99 |
DescriptionOrion(r) SkyQuest(TM) XT Classic Dobsonians It's no wonder customers heap 5-star ratings on these gentle giants. For not only do their jumbo-sized optics and uncomplicated design bring a "new level of joy to simple observing," raved Astronomy magazine, but they're also the most affordable quality Dobs on the market. SkyQuest XT Classics aren't just good bang for the buck, they're a supernova of telescope value! XT Classics give you the deep-space thrills without the deep-pocket frills. We've kept them lean and mean to keep their prices low for tight budgets. But rest assured, they come fully equipped for adventure, whether you're a beginning stargazer or are graduating to a more capable instrument. All Classics feature an expertly figured parabolic mirror housed in an enameled steel optical tube. The tube rides on a stable Dobsonian base that allows easy point-and-view navigation and has a convenient carrying handle. A 2" Crayford focuser (XT6 has 1.25" rack and pinion focuser), EZ Finder II aiming device, 25mm Sirius Plossl eyepiece (1.25"), and quick-collimation cap are all standard equipment. Setup takes only a minute, leaving the rest of the evening to marvel at the planets, the Moon, and a myriad of deep-sky treasures. Enjoy the fantastic views â?" and savings! One-year limited warranty. Features
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dobsonian telescopes for astronomy
