About the Orion SkyQuest XT8 PLUS Dobsonian Reflector Telescope...
What do you do with a best-selling, fan-favorite telescope that has developed a dedicated following among amateur astronomers the world over? Here at Orion, we gave our popular XT8 Classic Orion Dobsonian Telescope a serious makeover! Using the XT8 Classic as a starting point, we added top-notch features and Orion Telescope Accessories to create the Orion SkyQuest XT8 PLUS Dobsonian Reflector. This deluxe upgrade of our stalwart 8" reflector telescope boasts a redesigned Dobsonian base, adjustable altitude axis tension, a 2" dual-speed Crayford focuser, and a host of other upgraded features and included accessories to enhance your observing experience.
The sleek redesigned base of our Orion SkyQuest XT8 PLUS Dobsonian Reflector not only looks great, it also features weight-reducing cutouts which help make the XT8 PLUS more portable than its XT8 Classic Orion Dobsonian Telescope counterpart. The base is quite visible, even in the dark of night, thanks to its white trim. Topping the base (literally) is the big, 8"-aperture, f/5.9 reflector telescope optical tube with a unique, eye-catching metallic blue color. The XT8 PLUS features adjustable tension knobs on the altitude axis, which replace the tensioning springs found on the XT8 Classic model. These adjustable knobs make the XT8 PLUS Orion Dobsonian Telescope more versatile, since you can now adjust the tension of the altitude axis of motion to allow use of heavier 2" eyepieces, Barlow lenses, multiple finder scopes, and other hefty accessories. With the altitude tension properly adjusted, using heavier Orion Telescope Accessories will not cause the optical tube to drift downwards during use.
The Orion SkyQuest XT8 PLUS Dobsonian Reflector is built around an 8" (203mm) diameter parabolic primary mirror mounted in a sturdy, cast-aluminum support cell. The mirror collects 78% more light than a 6" mirror, so you get a significant increase in ability to observe dust lanes in nebulas, resolve the cores of prominent globular star clusters, and to reveal some of the more subtle structures in faint galaxies. The 1200mm focal length (f/5.9) XT8 Orion Dobsonian Telescope mirror allows you to obtain clear and crisp views at moderate to high magnifications on clear nights with good seeing conditions. The Moon and planets of our solar system like Jupiter, Saturn, and Mars shine brightly in the Orion SkyQuest XT8 PLUS, allowing you to inspect them in high-resolution detail. Enhanced-reflectivity mirror coatings boost the XT8 PLUS Orion Dobsonian Telescope''s mirror up to 94% reflectivity so as much light as possible is transmitted to the eyepiece, resulting in exceptionally bright, clear views. The point-and-view simplicity of the Dobsonian design is not as complicated as a telescope attached to an equatorial (EQ) mount and tripod. With a little practice, your whole family can use the XT8 PLUS Orion Dobsonian Telescope to scan the heavens just like experienced astronomers.
The big, 2" dual-speed Crayford focuser installed on the Orion SkyQuest XT8 PLUS Dobsonian Reflector is a significant upgrade compared to the single-speed focuser of the XT8 Classic. The focuser features a step-down 1.25" adapter so you can use both powerful 1.25" telescope eyepieces and wide-field 2" oculars. Thanks to its Crayford design, focus adjustments are smooth, accurate, and virtually free of backlash and flexure, even with heavier 2" accessories installed. With an 11:1 fine-focus ratio, you''ll be able to make extremely precise adjustments for sharp, crisply detailed views of whatever celestial quarry you turn your XT8 PLUS Orion Dobsonian Telescope towards.
We''ve equipped the Orion SkyQuest XT8 PLUS Dobsonian Reflector with a thorough set of top-notch Orion Telescope Accessories to enrich your stargazing experiences. This is one Orion Dobsonian Telescope you''ll be able to use during daytime hours, thanks to the included Safety Film Solar Filter, which lets you safely observe sunspots as they march across the surface of our nearest star. A 2", 28mm DeepView telescope eyepiece will help you obtain expansive 42x views, while the included 1.25" 10mm Sirius Plossl ocular will provide close-up, 120-power observations. For even more powerful views, use the included Shorty 2x Barlow lens to double the power of any 1.25" telescope eyepiece. You can keep one 2" eyepiece and up to three 1.25" eyepieces at-the-ready with the included eyepiece rack. Aim the XT8 PLUS Orion Dobsonian Telescope easily and accurately with the included Orion EZ Finder II reflex sight. Also included are a quick collimation cap for mirror alignment, dust caps for the reflector telescope tube and focuser, and special edition of Starry Night astronomy software with a SkyTheater DVD - a $69.90 value!
Like all reflector telescopes, the Orion SkyQuest XT8 PLUS Dobsonian Reflector will likely require minor periodic maintenance to make sure its optical mirrors are aligned, or "collimated". To make collimation adjustments nice and easy, we''ve outfitted the XT8 PLUS Orion Dobsonian Telescope''s secondary mirror with knurled thumbscrews so you don''t have to hassle with tools to align the reflecting optics.
For easy transport and storage, the Orion SkyQuest XT8 PLUS Dobsonian Reflector telescope can conveniently be broken-down into two separate pieces. By unthreading the two altitude tension knobs from the Dobsonian base, you can detach the 46.5" long reflector optical tube and transport each piece separately. With an assembled weight of 42 lbs., the XT8 PLUS Orion Dobsonian Telescope is a lot of telescope offered at an amazingly affordable price.
Orion SkyQuest XT8 PLUS Dobsonian Reflector Telescope Features...
- Deluxe upgrade of our popular XT8 Classic Dobsonian boasts multiple key feature enhancements and additional included accessories
- Eye-catching metallic blue optical tube rides on a redesigned base with adjustable altitude tension knobs
Convenient thumbscrew-adjustable secondary mirror for easy collimation without tools
- Features a 2" dual-speed Crayford focuser with 11:1 fine-focus provides precise focus adjustments for sharp views
- Upgraded accessories include a 2" 28mm DeepView eyepiece, 1.25" 10mm Sirius Plossl eyepiece, Safety Film Solar Filter, Shorty 2x Barlow, eyepiece rack, EZ Finder II reflex sight, collimation cap, and more
Orion SkyQuest XT8 PLUS Dobsonian Reflector Telescope Specifications...
Best for viewing: Brighter deep sky
Best for imaging: Lunar & planetary
User level: Beginner
Optical design: Reflector
Optical diameter: 203mm
Focal length: 1200mm
Focal ratio: f/5.9
Optics type: Parabolic
Glass material: Low thermal expansion borosilicate glass
Eyepieces: Sirius Plossl 10.0mm (1.25"), DeepView 28.0mm (2")
Magnification with included eyepieces: 120x, 43x
Resolving power: 0.57arc*sec
Lowest useful magnification: 29x
Highest useful magnification: 300x
Highest theoretical magnification: 406x
Limiting stellar magnitude: 14.2
Optical quality: Diffraction limited
Finder scope: EZ Finder II
Focuser: 2" dual-speed Crayford
Secondary mirror obstruction: 47mm
Secondary mirror obstruction by diameter: 23%
Secondary mirror obstruction by area: 5%
Mirror coatings/over-coatings: Aluminum & Silicon Dioxide
Mount type: Dobsonian
Astro-imaging capability: Lunar & planetary
Computerized compatibility: Not compatible
Bearing material: PTFE and UHMW bearings
Tube material: Steel
Tripod material: Wood
Length of optical tube: 46.5 in.
Weight, optical tube: 20.8 lbs.
Weight, mount/tripod: 21.2 lbs.
Weight, fully assembled: 42.0 lbs.
Additional included accessories: 1.25" eyepiece adapter, Eyepiece rack, 2x Barlow 1.25", Collimation cap, Safety film solar filter, 8"
Other features: Adjustable altitude axis tension knobs, Dual-speed Crayford, Enhanced 94% reflectivity, Secondary mirror collimation thumbscrews
Warranty: One yearOrion Product Number: 08974