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Orion Telescopes
Orion SkyLine 12" Dobsonian Reflector Telescope
3 easy payments of $433.33
With payment plan
Accepted Payment
Expected Ship Date: 11/15/2024

  • The Skyline 12" Dobsonian telescope is packed with top-notch features and deluxe accessories
  • Azimuth roller bearings and adjustable altitude trunnions provide silky-smooth telescope motion
  • Precision 2" Crayford focuser features dual-speed adjustment control with 10:1 fine-focus
  • Includes an 8x50 right-angle finder scope, cooling fan, eyepiece rack, and more!

Learn more
Item #  52912

With its large, one-foot diameter primary mirror, deluxe features and included set of premium accessories, the SkyLine 12" Dobsonian Reflector is an ideal instrument for backyard astronomers who want big, bright views of the cosmos.

The SkyLine 12" features a 12" (300mm) diameter parabolic primary mirror with 94%-96% reflectivity for bright views of celestial treats. The telescope's f/5 optics and long 1500mm focal length will provide night after night of great observing performance, yielding bright views of celestial objects like the Moon and planets, and more distant fare such as cloudy nebulas, star clusters, and galaxies. When you need to align the reflector telescope's optics, adjustments are quick and easy thanks to the tools-free, knurled primary mirror adjustment knobs and center-marked primary mirror. The secondary mirror has a 70mm minor-axis and its alignment can be adjusted with a Philips head driver. An included Orion LaserMate Deluxe II collimating tool will help you keep the SkyLine 12" Dobsonian's mirrors in perfect alignment for the best views possible.

Motion of the SkyLine 12" Dobsonian in both altitude (up/down) and azimuth (left/right) is silky smooth thanks to azimuth roller bearings and robust, adjustable ball-bearing altitude trunnions. Tension of both altitude and azimuth motion axes can be adjusted easily, without using tools, for optimized slewing control. If you wish to use especially heavy accessories with the SkyLine 12" Dobsonian, its sliding altitude trunnions let you alter the reflector optical tube's balance point for smooth, drift-free altitude motion. The sturdy Dobsonian base keeps the 12" reflector optical tube steady and secure.

Dobsonian Skyline Comparison Chart

The SkyLine 12" Dobsonian telescope features a machined, 2" Crayford focuser with dual-speed adjustment control and smooth, backlash-free motion. The fine-focus control knob allows you to dial-in details at a 10:1 ratio compared to the coarse focus knobs for ultra-precise focusing. An included adapter allows use of both 2" and 1.25" sized telescope eyepieces, and both the 2" and 1.25" holders feature non-marring compression rings to keep eyepieces in-place without scratching.

Two telescope eyepieces are included: a big 2" Erfle ocular with 30mm focal length, and a 1.25" Plossl eyepiece with 9mm focal length. The 30mm Erfle provides a wide, 50x view in the SkyLine 12" Dobsonian while the more powerful 9mm Plossl eyepiece yields views with 166x magnification. A handy eyepiece rack for the Dobsonian base is included, which provides a convenient storage spot for your telescope eyepieces and other accessories. A 35mm-length 2" extension adapter is also included.

The included 8x50 finder scope is a premium right-angle model which displays a correct left/right and up/down oriented image for easy aiming of the 12" Dobsonian telescope. To reduce cool-down time and provide clear and steady images, an included cooling fan can be plugged in (fan battery pack requires 8xAA batteries — not included) to circulate air against the back of the primary mirror.

With an assembled weight of 83.2 lbs., the SkyLine 12" Dobsonian is a big telescope that promises big and bright views. The 60" long telescope optical tube can be separated from the Dobsonian base quickly for easy, two-component transport.


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 800-447-1001.

Product Support
Visit our product support section for instruction manuals and more
  • Best for viewing
    Fainter deep sky
  • Best for imaging
    Solar, lunar & planetary
  • User level
  • Optical design
  • Optical diameter
  • Focal length
  • Focal ratio
  • Optics type
  • Eyepieces
    Plossl 9.0mm (1.25"),Erfle 30.0mm (2")
  • Magnification with included eyepieces
    167x, 50x
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Optical quality
    Diffraction limited
  • Finder scope
  • Focuser
    2" dual-speed Crayford
  • Mirror coatings/over-coatings
    Aluminum & Silicon Dioxide
  • Mount type
  • Bearing material
    Needle bearings
  • Tube material
  • Length of optical tube
    57.0 in.
  • Weight, optical tube
    47.3 lbs.
  • Weight, mount/tripod
    35.9 lbs.
  • Weight, fully assembled
    83.2 lbs.
  • Additional included accessories
  • Other features
  • Warranty
    One year

SkyLine 12" Dobsonian Reflector Optical Tube Assembly (OTA)
Dobsonian base
8x50 Right-angle correct-image finder scope
30mm Erfle telescope eyepiece, 2"
9mm Plossl telescope eyepiece, 1.25"
35mm-length 2" extension adapter
Eyepiece rack
Orion LaserMate Deluxe II Collimator
Cooling fan and battery holder
Handle for Dobsonian base

Orders received by 1pm Eastern Standard Time for in-stock items ship 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.

A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

Standard Delivery: $0.00
Standard Delivery to Canada: $115.00
3 Day Delivery: $340.00
2 Day Delivery: $340.00
Next Day Delivery: $378.00


This product is available to ship Standard delivery within the 50 US states and US territories/protectorates address. Delivery is not available to APO/DPO/FPO addresses . Delivery is available to Canada.

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