Orion 8" f/8 Ritchey Chretien Reflecting OTA Telescope

Product Details

• Description
• Specifications
• Included Items
• Recommended Products
• Reviews

• • 8" (200mm) aperture Ritchey Chretien optical tube ideal for use with DSLR cameras and small-format CCDs to produce wonderfully flat, virtually coma-free astrophotos
  • Hyperbolic primary and secondary mirrors made of low-expansion quartz glass with enhanced aluminum coatings boast 96% reflectivity for bright imaging performance, and the secondary mirror is precisely center-marked to aid in collimation
  • A rotatable, machined dual-speed (10:1) Crayford focuser equipped with a sturdy linear-bearing provides precise focus adjustment without slippage or flexure with heavy astrophotography accessories attached
  • Three included focus extension rings (one 2" and two 1") allow focus position adjustment for use with various imaging cameras and astrophotography accessories
  • Features two dovetail finder scope bases and a unique, Orion-exclusive slotted narrow dovetail bar along the top of the tube for easy accessory attachment

• specifications

  Aperture	200 mm (8")
  Dawes Limit	0.58 arcseconds
  Focal Length	1600 mm
  Focal Ratio	f/8
  Highest Magnification	400x
  Light Gathering Power	816x
  Limiting Magnitude	15.3
  Optical Design	Ritchey Chretien
  Tube Length	559mm
  Tube Weight	18.5 lbs

• included items

  • Orion 8" f/8 Ritchey-Chrétien Astrograph Telescope with 2" dual-speed linear-bearing Crayford focuser
  • Extension tube, 2" length (x1)
  • Extension tube, 1" length (x2)
  • Starry Night SE astronomy software digital download insert