About the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope...
The SkyQuest XX16g - the largest Orion Dobsonian Telescope yet - is an ideal combination of three key telescope features: large aperture, convenient portability, and precise GoTo object location. Thanks to its 16" aperture parabolic primary mirror, the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope will astound you with spectacular views of the night sky. Its Orion-designed collapsible Dobsonian base and 8-pole truss optical tube makes transportation of this hefty telescope easy since the entire Orion Dobsonian Telescope can be disassembled without tools into small, manageable component pieces that can fit in virtually any standard size car. You''ll be able to enjoy the XX16g''s large-aperture optics thanks to the accurate, motorized GoTo system which will automatically locate and track any of over 42,000 celestial curiosities within its computerized database of night sky objects.
The powerful, high-tech, and downright BIG Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope takes deep-sky observing to new space-penetrating depths. It is the latest and largest in our line of fully automatic Orion GoTo Dobsonian Telescopes. For serious amateur astronomers seeking big-aperture exhilaration, state-of-the-art GoTo electronics, and a clever Dobsonian design that is transportable in almost any size vehicle - the XX16g is an ideal "lifetime" telescope!
Wait, you''re thinking, the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope fits in almost any size vehicle? Yes, you can take this big telescope with you, because both the Dobsonian base and optical tube of the XX16g Orion Dobsonian Telescope were engineered by Orion to quickly disassemble - without tools - into easily manageable components, the heaviest of which (base groundplate assembly) weighs 61.4 lbs.
Although its components are designed for convenient portability, we understand that many stargazers will commonly use the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope in the backyard or other observing site close to home. With this in mind, we''ve come up with two different solutions that allow you to easily move the fully assembled XX16g Orion Dobsonian Telescope from garage to yard and back again; the Orion Heavy Duty Cart for Large Dobsonians (sold separately), and the Orion Wheel Kit for SkyQuest XX16g GoTo Dobsonian (coming soon).
Both the 16" diameter (406mm), lightweight parabolic primary mirror and 91mm minor-axis secondary mirror of the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope are made of low-expansion glass and feature enhanced 94% reflectivity aluminum coatings for optimal observing performance. The XX16g delivers a giant 77% jump in light grasp compared to a 12" Dobsonian reflector, and even a sizeable 30% gain over a 14" aperture telescope! Those elusive celestial objects you once considered "faint fuzzies" won''t be nearly so faint or so fuzzy through the SkyQuest XX16g GoTo Truss Tube Orion Dobsonian Telescope! You''ll enjoy views that simply cannot be seen in smaller telescopes.
The lightweight primary mirror of this Orion Dobsonian Telescope cools more efficiently than standard flat-back parabolic mirrors, thanks to its thin, curved-back design. The primary mirror of the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope is held in place by an open-ventilation mirror cell which also helps the mirror to acclimate quickly. This special mirror cell features three large knurled knobs for easy collimation adjustments, and can accommodate an optional 12V Three Fan Cooling System (sold separately) for even faster temperature equilibration.
While the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope is easy to disassemble for convenient portability, once it''s assembled it is a very solid telescope. The rigid 8-pole truss tube provides great structural rigidity of the optical tube and virtually eliminates flexure that can affect 6- and 3-pole designs. The XX16g GoTo Orion Dobsonian Telescope base utilizes thick, 1" composite wood panels for extra-strong support, and features perpendicular struts that brace the side panels when assembled for rock-solid performance. All base boards are laminated with water-resistant melamine.
The Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope SynScan GoTo system includes a database of over 42,000 celestial objects. Dual optical encoders and servo motors in each axis pinpoint any object you select with the backlit hand controller and track its motion. The closed-loop electronics let you slew the telescope by hand if desired, while still maintaining the GoTo alignment. Heavy-duty clutch knobs on both axes can be adjusted to the desired level of resistance.
If you were to point the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope optical tube straight up, the telescope eyepiece would be positioned 72-3/8" (6.03'') above the ground. Of course, during most observing sessions the eyepiece will be considerably lower than this maximum height, but no matter where you point the XX16g Orion Dobsonian Telescope at night, you''re sure to be astonished by the bright, sharply detailed views this amazing telescope provides.
The Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope comes equipped with a 2" dual-speed Crayford focuser with 1.25" adapter, and includes a 28mm 2" DeepView telescope eyepiece and a 12.5mm illuminated reticle telescope eyepiece for precise GoTo system alignment. Other accessories include an EZ Finder II reflex sight, eyepiece rack, GoTo hand controller bracket, 12V DC power cable, and RS-232 cable for firmware updates. A 12V field battery or AC-to-DC adapter (sold separately) is required for motorized operation.
An optional Light Shroud for the Orion Dobsonian Telescope optical tube is also available and highly recommended (Light Shroud sold separately). Keep your Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope optical tube safe and clean during transport or storage with the recommended optional Case Set (sold separately).
It''s a BIG telescope you can take anywhere! Get the Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope and enjoy jaw-dropping views of the night sky in a big yet pleasantly portable GoTo Orion Dobsonian Telescope.
Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope Features...
- Orion''s 16" truss-tube GoTo Dob presents a perfect combination of big-aperture optics and sophisticated, fully motorized object location technology for the ultimate in Dobsonian telescope performance and observing convenience
- A big, 16" aperture telescope designed for maximum portability - both the optical tube and Dobsonian base can be broken down quickly without tools into easily manageable components for convenient transport in any standard size car
- Features accurate, motorized GoTo pointing and tracking of over 42,000 celestial objects within its GoTo system database, and enough aperture for great views of each one
- Closed-loop electronics forgive accidental bumps and allow the telescope to be moved manually without losing alignment of the GoTo system. Heavy-duty clutches on both axes allow independent adjustment of motion to desired level of resistance
- Huge 16" (406mm) diameter, convex-back parabolic primary mirror with enhanced, 94% reflectivity aluminum coating delivers outstanding views of faint deep-sky objects
Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope Specifications...
Best for viewing: Fainter deep sky
Best for imaging: Lunar & planetary
User level: Advanced
Optical design: Reflector
Optical diameter: 406mm
Focal length: 1800mm
Focal ratio: f/4.4
Optics type: Parabolic
Glass material: Low thermal expansion glass
Eyepieces: DeepView 28.0mm (2"), Plossl 12.5mm (1.25")
Magnification with included eyepieces: 64x, 144x
Resolving power: 0.29arc*sec
Lowest useful magnification: 58x
Highest theoretical magnification: 800x
Limiting stellar magnitude: 16.5
Optical quality: Diffraction limited
Finder scope: EZ Finder II
Focuser: 2" dual-speed Crayford
Secondary mirror obstruction: 91mm
Secondary mirror obstruction by diameter: 22%
Secondary mirror obstruction by area: 5%
Mirror coatings/over-coatings: Enhanced Aluminum & Silicon Dioxide
Mount type: Dobsonian
Astro-imaging capability: Simple moon shots
Computerized compatibility: Go-To included
Alignment procedure: 2-Star alignment
Number of objects in database: 42,000+
Bearing material: AZ: Thrust needle bearings ALT: Ball bearings
Power requirement: 12-volt DC (tip positive)
Setting circles: Electronic, via the hand controller
Available ports: RS-232
Tube material: Steel
Tripod material: Wood
Weight, optical tube: 89.8 lbs.
Weight, mount/tripod: 105.0 lbs.
Weight, fully assembled: 195.0 lbs.
Additional included accessories: 2" Dual-Speed Crayford focuser w/ 1.25" adapter, 12V DC power cable, Serial cable for firmware updates
Other features: Closed loop servo drive GoTo system, Collapsible base for convenient transportation, Choose from auto tracking or GoTo mode
Warranty: One yearOrion Product Number: 08968