A powerful and capable telescope, the Orion Build-A-Scope 8" Classic Dobsonian is based on 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 8" Classic. The Moon and planets of our solar system like Jupiter, Saturn, and Mars shine brightly in the Orion Build-A-Scope 8" Classic Dobsonian Telescope, allowing you to inspect them in detail. Its 8" 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 Orion Build-A-Scope 8" Classic Dobsonian Telescope 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 Build-A-Scope 8" Classic Dobsonian has it all!
The Orion Build-A-Scope XT8 Classic Dobsonian is built around an 8" (203mm) diameter parabolic primary mirror mounted in a 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 mirror allows you to obtain clear and crisp views at moderate to high magnifications on clear nights with good seeing conditions. Enhanced-reflectivity mirror coatings boost the 8" mirror to 94% reflectivity so as much light as possible is transmitted to the eyepiece.
The Dobsonian base of the Build-A-Scope 8" Classic Dobsonian Telescope provides a simple and stable low-profile altazimuth platform for the 8" aperture optical tube. The tube attaches securely to the base by virtue of Orion's CorrecTension Friction Optimization system, which utilizes heavy-duty springs to both securely couple the tube to the base, and to keep the telescope in constant balance to avoid drifting during observations. Even with large 2" eyepieces and accessories installed, the Build-A-Scope 8" Classic Dobsonian Telescope will remain balanced throughout your viewing sessions.
The Orion Build-A-Scope 8" Classic Dobsonian Telescope can conveniently be separated into two pieces for easy transport and storage. By unhooking the two CorrecTension springs from the Dobsonian base you can detach the 46.5" long optical tube. The 8" optical tube weighs 20.3 lbs., while the 19" diameter Dobsonian base tips the scales at 20.7 lbs. With an assembled weight of 41 lbs., the Orion Build-A-Scope 8" Classic Dobsonian can be easily moved to and from your favorite observing site, whether it's just a few steps out the back door, or many miles down the road.
With the Build-A-Scope 8" Classic Dobsonian from Orion, you decide which finder scope, focuser, and eyepiece comes with the telescope. You can choose between magnified achromatic finder scopes, red-dot reflex sights, or more deluxe right-angle correct-image or illuminated crosshair finder scope models to be included with the SkyQuest XT8 Classic Dobsonian. Next, select which focuser you want to be included with the telescope, choosing between smooth-adjusting Crayford designs with or without dual-speed fine focus control. You also get to select which telescope eyepiece is included from Orion's wide selection of quality oculars. Choose from low focal length, high magnification eyepieces, or go after the bigger picture with a wide-angle eyepiece to view a large swath of sky through the telescope.
A great telescope with the optical strength to please serious beginners and veteran skygazers alike, the Orion Build-A-Scope 8" Classic Dobsonian Telescope will provide years of astronomical adventure for you and your whole family.
Meets or exceeds all California State Environmental Quality & Safety Regulations (CARB 93120 Phase 2 Compliant).
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.
Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.
Visit our product support section for instruction manuals and more
8" Aperture Reflector Telescope Optical Tube Assembly
2"-to-1.25" eyepiece adapter
Screws with round knob attached
Top base plate
Ground base plate
Base assembly screws
Feet attachment wood screws
Self-adhesive rubber bumper
Large hex-head bolt
3/8" lock nut
Socket-head cap screws
Starry Night special edition software
And of course, the focuser, finder scope, eyepieces, and other accessories you choose!