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Orion Telescopes

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Orion SkyQuest XX12 Truss Dobsonian Telescope with Shroud
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  • Deluxe 12" truss tube Dobsonian reflector telescope disassembles for easy transport to any observing site in virtually any size car
  • Provides jaw-dropping detailed views of cloudy nebulas, distant galaxies, and sparkling star clusters as well as the Moon and planets of our solar system
  • Traditional 8-pole truss design offers superior rigidity compared to other telescope designs using less truss poles or struts
  • Big 12" (305mm) parabolic optics (f/4.9) with enhanced reflectivity coatings (94%) pack a serious punch for bright deep-sky observing
  • Includes custom Light Shroud, Dual-speed (11:1) 2" Crayford focuser, 9x50 finder scope, 2" and 1.25" eyepieces, Cooling Accelerator Fan, eyepiece rack, Starry Night software, and more


Learn more
Item #  27195

It's a deep-sky observer's dream Dobsonian! The Orion XX12's jumbo 12" (305mm) Pyrex parabolic optics of 1500mm focal length (f/4.9); and a sturdy, eight-truss tube design that disassembles in about a minute into compact, easily portable components for transport to your favorite observing site! The XX12's traditional 8-pole truss tube design let's you break the tube down into portable "bite-size" pieces - no tools required! This 8-pole design provides a more rigid structural support than other designs in this category. All tube assembly knobs are captive, so you won't lose any in the dark!

The XX12 focuser is a dual-speed (11:1) 2" Crayford with 1.25" adapter, metal focus knobs, and adjustable drawtube tension to ensure excellent, non-slip motion for any size of eyepiece used. We outfitted the XX12 with larger, 8" altitude bearings for smoother tube motion. The side-reinforced base sports stylish cutouts that minimize weight without sacrificing stability. EbonyStar laminate glides on non-stick PTFE material bearings to give the azimuth motion the feel of silk. Other fine features include adjustable altitude tension, an open 9-point flotation primary mirror cell, and a "navigation knob" for easy slewing.

Although the primary mirror cell is extremely well ventilated, the Orion SkyQuest XX12 Truss Dobsonian comes with a Cooling Accelerator Fan, which attaches to the back of the cell and facilitates faster equilibration of the mirror to ambient temperature. The secondary mirror has a 70mm minor axis and is held in a four-vane spider with very thin (0.7mm thick) vanes to minimize diffraction effects.

The XX12 Truss Tube Dobsonian telescope comes fully loaded with great accessories, including a 9x50 finder scope, aluminum telescope eyepiece rack, two telescope eyepieces: a low-power 35mm (43x) DeepView 2" and a high-power 10mm (150x) Sirius Plossl 1.25", dust caps for the top and bottom optical tube sections, and a "collimating cap" to insure optical alignment of the mirrors. A convenient carrying handle is provided for the base.

The included XX12 Light Shroud, custom designed for the SkyQuest XX12 optical tube, is made of a stretchy nylon blend material that fits like a glove over the truss poles of the telescope, fastening with thick elastic bands on both ends. A Light Shroud is vital for optimizing visual performance in any area afflicted with light pollution or peripheral light sources like street and house lights. The water-resistant, opaque black fabric blocks stray light from entering the optical path, greatly improving image contrast. It's also breathable, which minimizes unwanted vibration of the scope in breezy conditions.

It's the big Dobsonian you've dreamed of owning, and now you can take it with you wherever dark skies beckon! Get the practical and amazingly affordable Orion SkyQuest XX12 Truss Tube Dobsonian by Orion and hit the road to astronomical adventure.

Meets or exceeds all California State Environmental Quality & Safety Regulations (CARB 93120 Phase 2 Compliant).

WARNING! When using a truss tube Dobsonian telescope for solar observing, always use a Light Shroud and a properly sized solar filter. When you install the Light Shroud make certain there are no gaps between the Shroud and the telescope where direct sunlight can reach the telescope mirror. When a truss tube telescope (equipped with a solar filter but no Light Shroud) is pointing near (not at) the Sun, direct sunlight can hit the mirror and focus on the solar filter or other portions of the telescope. This can lead to eye injury or damage to the telescope. Using a Light Shroud protects your telescope from peripheral sunlight.

Before using any telescope for solar observing, make sure to install all dustcaps or other protective covers on all optical components such as finder scopes to keep sunlight from passing through them. Glancing through an uncovered optical system, even for an instant, can cause permanent eye damage. Always install protective caps on all optical instruments if left out during daylight hours. 

Warranty

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.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • Best for viewing
    Fainter deep sky
  • Best for imaging
    Lunar & planetary
  • 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 borosilicate glass
  • Eyepieces
    DeepView 35.0mm (2"),10.0mm (1.25")
  • Magnification with included eyepieces
    42x, 150x
  • Resolving power
    0.38arc*sec
  • Lowest useful magnification
    42x
  • Highest useful magnification
    300x
  • Highest theoretical magnification
    610x
  • Limiting stellar magnitude
    15.1
  • Optical quality
    Diffraction limited
  • Finder scope
    9x50
  • Focuser
    2" 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 & Silicon Dioxide
  • Mount type
    Dobsonian
  • Astro-imaging capability
    Simple moon shots
  • Alignment procedure
    2-Star Alignment
  • Bearing material
    PTFE bearings
  • Power requirement
    8-D batteries or 12-volt-750mA
  • Available ports
    RS-232
  • Tube material
    Steel
  • Tripod material
    Wood
  • Length of optical tube
    58.3 in.
  • Weight, optical tube
    49.5 lbs.
  • Weight, mount/tripod
    34.0 lbs.
  • Weight, fully assembled
    86.5 lbs.
  • Additional included accessories
    Cooling accelerator fan included
  • Other features
    Unique base design with side braces for stability, EbonyStar on virgin teflon azimuth bearings, Large 8" altitude bearings w/ adjustable tension
  • Warranty
    One year

Orion SkyQuest XX12 12" f/4.9 Truss-Tube Dobsonian Reflector Telescope w/ parabolic primary optics
9-point flotation primary mirror cell with spring loaded thumbscrew collimation adjustments
70mm minor-axis secondary mirror on 4-vaned (0.7mm thick vanes) secondary holder
4 groups of two-pole rotatable truss assemblies with captive assembly knobs
Dual-Speed (11:1) 2" Crayford focuser w/ 1.25" telescope eyepiece adapter and adjustable focusing tension
Orion unique new base design with side braces for increased stability
Base outfitted with EbonyStar on non-stick PTFE azimuth bearings for optimized motion
Large 8" diameter ABS plastic altitude bearings with adjustable CorrecTension knobs
Navigation knob
Base handle
Telescope eyepiece rack (holds one 2" eyepiece and three 1.25" eyepieces)
9x50 finder scope
35mm DeepView 2" eyepiece
10mm Sirius Plossl telescope eyepiece
Cooling Accelerator Fan
12V battery pack for Cooling Fan (requires 8 D cell batteries: not included)
Dust covers for top and bottom tube sections
Collimation Cap
Base assembly hardware
Orion Starry Night Special Edition software
Instruction manual
XX12 Light Shroud for optical tube

Orders received by noon Pacific Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

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