The Moon Through a Canon T1I and Orion 8" Dobsonian Telescope

!±8± The Moon Through a Canon T1I and Orion 8" Dobsonian Telescope

The Moon Through a Canon T1I and Orion 8" Dobsonian Telescope

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Dobsonian Telescopes for Amateurs

!±8± Dobsonian Telescopes for Amateurs

There is a massive range of telescopes to choose from which can be confusing if you are an amateur looking to buy your first telescope. One of the telescopes you might hear recommended for beginners is the Dobsonian telescope.

This type of telescope was developed by John Dobson back in the sixties as a way of making astronomy much cheaper and accessible to all. His invention led to the sidewalk astronomy event we still see today. The Dobsonian telescope is cheaper by virtue of its simple design. By removing the need for the large heavy and expensive mounts generally used by large reflector telescopes it became possible to put large aperture telescopes within the reach of amateurs.

The simplified design involves putting the scope tube on a simple turntable allowing it to swivel as well as hinge up and down, the same alt-az movement many simpler scopes use on tripods. By using this design it become possible for complete amateurs to use large aperture scopes to do deep sky viewing.

The advantage of large apertures is that high magnification can be achieved while keeping a sharp image for viewing.The general rule of thumb is to take the aperture in millimeters and multiply it by two to get the upper limit of magnification that can be gained with the right eyepieces.Thus a 12 inch dobsonian might achieve up to 600x magnification, whereas your little 3 inch refractor can achieve up to 150x.

Now while magnification is not actually the key to successful astronomy (it has its downsides too) the point made is that under good conditions, i.e. good dark skies, those big old 'Dobs' can allow for excellent deep sky viewing that can knock your socks off!

It is the ease of use, simple set-up and deep sky capabilities that makes these dobsonian telescopes so popular with amateurs and schools. If you have a good location to use one of these then these are an excellent purchase I can heartily recommend.

Want to find some bargain Dobsonian Telescopes? Check out the links below.

Dobsonian Telescopes for Amateurs

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Orion SkyQuest XT10i IntelliScope Dobsonian Telescope

!±8± Orion SkyQuest XT10i IntelliScope Dobsonian Telescope

Brand : Orion | Rate : | Price : $729.99
Post Date : Nov 24, 2011 10:00:15 | Usually ships in 1-2 business days

Orion SkyQuest XT10i IntelliScope Dobsonian Telescope

This remarkable scope combines powerful 254mm-diameter reflector optics with point-and-view simplicity in one nicely portable package. And with included Computerized Object Locator, even the first-time stargazer can pinpoint the location of 14,000+ celestial wonders stored in the IntelliScope's databank. It's like having your own personal tour guide to the universe! The optical tube houses an 10" (254mm) parabolic mirror and rides on our state-of-the-art Dobsonian base, equipped with springless CorrecTension friction control for smooth movement and always-perfect tube balance.

More Specification..!!

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moon 130311-Orion Dobsonian XT4.5

!±8± moon 130311-Orion Dobsonian XT4.5

i have observed moon using my telescope, Orion Dobsonian Xt 4.5, the exposure of this video is high, hence cant see the surface of the moon clearly. Indeed, ima beginner in astronomy. details: 2106,13032011 Backyard, Birmingham,uk

moon 130311-Orion Dobsonian XT4.5

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Orion SkyQuest XT12 IntelliScope Dobsonian Telescope With Ob

!±8±Orion SkyQuest XT12 IntelliScope Dobsonian Telescope With Ob

Brand : Orion
Rate :
Price : $1,079.99
Post Date : Nov 05, 2011 20:09:05
Usually ships in 1-2 business days

The 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.

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