Orion 254mm f/4.7 Reflector Telescope Optical Tube Assembly
Item #09959e
4.8 / 5.0
€ 549.99
Do you already own an equatorial mount? Add the Orion 254mm optical tube to get vivid, close-up views of deep-sky and solar system objects. This telescope includes a prime-focus c...
Show More
Do you already own an equatorial mount? Add the Orion 254mm optical tube to get vivid, close-up views of deep-sky and solar system objects. This telescope includes a prime-focus camera adapter for astrophotography.
Quantity:
Add To Cart
This item: 
Add to Wish List
  • More Info
    • 254mm (10") aperture and 1200mm focal length reflector telescope optical tube provides vivid, close views of deep-sky and solar system objects
    • Includes 2" Crayford focuser for smooth, backlash-free focus adjustment
    • Recommended for visual or astrophotographic use
    • Weighs 27.2 pounds
    • Optical tube only, does not include tube rings, mount, or tripod - which can be purchased separately
  • Specs
    • Best for viewing:
      Fainter deep sky
    • Best for imaging:
      Deep sky
    • User level:
      Advanced
    • Optical design:
      Reflector
    • Optical diameter:
      254 mm
    • Focal length:
      1200 mm
    • Focal ratio:
      f/4,7
    • Optics type:
      Parabolic
    • Glass material:
      BK-7
    • Eyepieces:
      None
    • Resolving power:
      0,46 arc*sec
    • Lowest useful magnification:
      34 x
    • Highest useful magnification:
      300 x
    • Highest theoretical magnification:
      508 x
    • Limiting stellar magnitude:
      14,7
    • Optical quality:
      Diffraction limited
    • Focuser:
      2" Crayford
    • Secondary mirror obstruction:
      63 mm
    • Secondary mirror obstruction by diameter:
      25 %
    • Secondary mirror obstruction by area:
      6 %
    • Mirror coatings/over-coatings:
      Aluminum & Silicon Dioxide
    • Mount type:
      Optical Tube without Mount
    • Astro-imaging capability:
      Lunar, planetary & long exposure
    • Tube material:
      Steel
    • Length of optical tube:
      119,9 cm
    • Weight, optical tube:
      12,3 kg
    • Weight, fully assembled:
      12,3 kg
    • Additional included accessories:
      Collimation cap
    • Other features:
      2" crayford focuser w/ 1.25" adapter
    • Warranty:
      One year
  • Shipping Info

    Orders received by 5pm UTC for in-stock items 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.

  • Reviews
    Customer Reviews ()