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 camera adapter for astrophotography.
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  • 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

    Responding to your requests, we are pleased to offer the Orioin 254mm f/4.7 Reflector Telescope Optical Tube assembly (OTA) for folks who already have an equatorial mount. This optical tube assembly includes parabolic mirror optics, upgraded 2" Crayford-style focuser, telescope eyepiece holder, quick-collimation cap, dust cap, and dovetail base for finder scope. Aperture: 254mm (10.0"). Focal length: 1200mm (f/4.7). Has a 2" Crayford-style focuser with 2" and 1.25" telescope eyepiece holders. Recommended for visual use or astrophotography. Includes prime-focus camera adapter. Weighs 27.2 lbs. Tube rings, tube ring mounting plate, finder scope, and eyepieces sold separately.

    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 sales-eu@telescope.com

    Product Support

    Visit our product support section for instruction manuals and more

  • 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.

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