About the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian Telescope...
Orion'''s latest innovative combination of big-aperture performance and convenient portability comes to life in the form of the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope. Their most advanced 12" Orion Dobsonian Telescope is geared up for extensive exploration of the night sky, with fully motorized GoTo and tracking drives providing automated pointing to any of the over 42,000 celestial objects in the hand controller'''s database.
Orion designed the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope optical tube and base with portability in mind. The truss tube can be divided into a small front tube section including the secondary mirror and focuser, rear tube section housing the primary mirror cell, and the four truss-pole pairs. They have increased the portability of the XX12g Orion Dobsonian Telescope compared to its XX12i IntelliScope-equipped counterpart by making the base collapsible for easy no-tools-required disassembly into four separate, smaller pieces for easier transport. The separated component pieces of the XX12g tube and base can be stored without taking up an excessive amount of space in your home, and can be transported in virtually any standard-sized car to your favorite dark-sky observing site.
The Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope optical tube employs a rigid 8-pole truss design that virtually eliminates flexure observed in 6- and 3-pole collapsible tube designs. Stability of the assembled XX12g Dobsonian base is enhanced by its 1" thick composite wood base panels, which are laminated with water-resistant black melamine. GoTo and tracking motors are pre-installed on the base panels, making assembly nice and easy. Once the Orion Dobsonian Telescope tube and base are assembled, the optical tube attaches to the base with a dovetail trunnion and locks securely in place with a single captive hand knob.
The Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope GoTo system automatically slews the telescope to any of the over 42,000 celestial objects you choose from the hand controller'''s intuitive menus, once a simple alignment process is completed. Altitude and azimuth motors automatically track the motion of the target object so it stays put in the telescope eyepiece field of view for extended visual study. For anyone who has spent an evening manually tracking objects with a Dobsonian this is a profound upgrade, and trust us, it was worth the wait. Forgiving of bumps and nudges, the XX12g Orion Dobsonian Telescope features closed-loop electronics allowing manual repositioning, or slewing, of the telescope tube without losing alignment of the GoTo system.
With 12" (305mm) of light gobbling aperture and a fast f/4.9 focal ratio, the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope is capable of providing clear, crisp and very bright views of the night sky in a 2" or 1.25" telescope eyepiece installed in its 2" dual-speed Crayford focuser with 1.25" adapter. The 12" diffraction-limited parabolic primary mirror is crafted from low thermal expansion glass for speedy ambient temperature acclimation and optimal visual performance. The included cooling accelerator fan helps hasten temperature acclimation of the primary mirror (requires 8 D-cell batteries, or other 12V power source, not included). The Orion Dobsonian Telescope primary mirror features enhanced reflectivity aluminum coatings which provide 94% reflectivity and a protective quartz overcoat, so you get the most out of each and every photon collected.
The Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope is outfitted with a thorough set of included accessories. A 35mm DeepView 2" telescope eyepiece provides wide 56 degree views and a 12.5mm illuminated Plossl 1.25" telescope eyepiece helps optimize GoTo system alignment. A collimation cap, removable eyepiece rack, 12V DC power cable and RS-232 cable are also included. A 12V power supply (sold separately) is required for use of the GoTo system and motors.
In keeping with Orion'''s tradition of offering top-notch quality optics at affordable prices the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope is priced to please. Includes a FREE Starry Night Special Edition software CD-ROM and SkyTheater DVD - a $69.90 value! As with all Orion Telescopes, our Customer Service and Technical Support teams are available to help with any questions you may have on our exciting new 12" GoTo Truss Tube Orion Dobsonian Telescope.
A specially designed Light Shroud is available (sold separately) for the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope optical tube. A Light Shroud significantly enhances the viewing experience in a Truss Tube Dobsonian by blocking distracting peripheral light from entering the light path, optimizing contrast and brightness.
A custom Orion Padded Case Set (sold separately) is available for the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope optical tube. Each set of cases includes a padded case for the top tube section including a secondary mirror cover, a padded case for the bottom tube section, and a roll-up case to safely hold the truss-pole assemblies. An Orion Padded Case Set is the best way to preserve and protect your investment for years to come.
With the Orion SkyQuest XX12g GoTo Truss Tube Dobsonian telescope, you'''re amply equipped for big-aperture visual adventures, wherever you may roam.
Orion SkyQuest XX12g GoTo Truss Tube Dobsonian Telescope Features...
- An elegant combination of three astronomical attributes: powerful optical performance, convenient collapsible portability, and modern motorized GoTo and tracking technology
- Big 12" aperture reflector optics bring in a huge amount of light from the night sky for great views of nebulas, galaxies, star clusters and solar system targets like the Moon and planets
- Altitude and azimuth motors automatically track the motion of the target object so it stays put in the eyepiece field of view for extended visual study
- Fully motorized GoTo and tracking drives providing automated pointing to any of the over 42,000 celestial objects in the hand controller'''s database
- The 12" diffraction-limited parabolic primary mirror is crafted from low thermal expansion glass for speedy ambient temperature acclimation and optimal visual performance
- Orion-designed collapsible GoTo Dobsonian base AND 8-pole truss optical tube both break down into easily manageable components for transport in virtually any car
- Closed-loop electronics forgive accidental bumps, nudges, and even manual repositioning without losing alignment of the GoTo system
- Rigid 8-pole truss tube design eliminates flexure observed in 6- and 3-pole truss Dobsonians
- The included cooling accelerator fan helps hasten temperature acclimation of the primary mirror
- The primary mirror features enhanced reflectivity aluminum coatings which provide 94% reflectivity and a protective quartz overcoat, so you get the most out of each and every photon collected
- Includes a 35mm DeepView 2" eyepiece, 12.5mm illuminated Plossl 1.25" eyepiece, eyepiece rack, EZ Finder II reflex sight, 2" extension tube, reflector collimation cap, 12V DC power cable, Cooling fan, Starry Night software, and more!
Orion SkyQuest XX12g GoTo Truss Tube Dobsonian Telescope Specifications...
User level: Advanced
Optical design: Reflector
Optical diameter: 305mm
Focal length: 1500mm
Focal ratio: f/4.9
Optics type: Parabolic
Glass material: Low thermal expansion glass
Eyepieces included: DeepView 35.0mm (2in.), Plossl 12.5mm (1.25in.)
Magnification with included eyepieces: 42x, 120x
Resolving power: 0.38arc*sec
Lowest useful magnification: 42x
Highest useful magnification: 300x
Limiting stellar magnitude: 15.1
Optical quality: Diffraction limited
Finder scope: EZ Finder II
Focuser: 2in. dual-speed Crayford
Secondary mirror obstruction: 70mm
Secondary mirror obstruction by diameter: 23%
Secondary mirror obstruction by area: 5%
Mirror coatings/over-coatings: Enhanced Aluminum and Silicon Dioxide
Mount style: Dobsonian
Astro-imaging capability: Simple moon shots
Computerized compatibility: Go-To included
Alignment procedure: 2-Star Alignment
Number of objects in database: 42,9000
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
Length of optical tube: 58.3 in.
Weight, optical tube: 47.0 lbs.
Weight, mount/tripod: 71.0 lbs.
Weight, fully assembled: 118.0 lbs.
Additional included accessories: Choose from Auto Tracking or GoTo modes, Cooling Accelerator Fan included, 2in. Dual-Speed Crayford focuser w/ 1.25in. adapter
Other features: Closed Loop Servo Drive GoTo System, Collapsible Base for convenient transportaion, Large 8in. altitude bearings w/ adjustable tension
Warranty: One yearOrion Product Number: 10148