Orion ED66 CF f/6.1 Doublet Refracting Telescope

  • Aperture: 66 mm (2.5")
  • Focal Ratio: f/6.1
  • Focal Length: 402 mm
  • Carbon fiber tube, FPL-51 ED Glass, all around quality
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  • Regular price $699.99

More on the Way* We do not currently have this in stock, but is a common item we carry. More are likely on the way as the manufacturer allows.
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Orion ED66 CF f/6.1 Doublet Refracting Telescope

The ED66 Carbon Fiber Refractor from Orion is a quick, compact, high-performance telescope. It uses fully multi-coated FPL-51 ED glass to ensure the utmost in optical clarity. The carbon fiber optical tube provides high durability without a high weight and goes further to provide stellar thermal stability, ensuring a great degree of consistency. The focal ratio of this slim and elegant astronomy solution clocks in at a fast f/6.1, and combined with the 66mm aperture and generally high-quality construction it makes this a great telescope for the astronomer who wants to quickly capture images on the go. 


Aperture66 mm (2.5")
Camera/Eyepiece Connection1.25"
Dawes Limit1.76 arcseconds
Focal Length400 mm
Focal Ratiof/6.1
Glass Type51 ED
Highest Magnification132x
Light Gathering Power89x
Limiting Magnitude12.8
Optical DesignDoublet
Tube Length305mm
Tube Weight3.8 lbs
Warranty1 Year Warranty


  • ED66 CF Refractor OTA
  • Dual-Speed Crayford Focuser
  • 14mm Wide Field 65 Degree Eyepiece
  • Deluxe 45 Degree Correct-Image Diagonal
  • Hard Carry Case W/Foam Inserts
  • Dovetail base for Finderscope