520-292-5010

ED81S OTA

ED81S OTA

5864

ED Glass Scope that travels with you. The ED81S Refractor Telescope features fully multi coated ED Glass produces clear and high contrast viewing, virtually free of false color. . The combination of better color correction from the new ED glass an ...

$1,099.00
OR
Details
Reviews

Details

ED Glass Scope that travels with you. The ED81S Refractor Telescope features fully multi coated ED Glass produces clear and high contrast viewing, virtually free of false color. . The combination of better color correction from the new ED glass and brighter images from its fast f/7.7 focal ratio will satisfy the most demanding visual astronomer or astro-photographer. The new ED glass uses newly developed, environmentally friendly glass technology. The optical tube is very stable yet light weight. Vixen's new Dual Speed Focus, now standard on the ED81 Refractor Telescope, provides fine focus adjustments for 1/7th speed focusing.

  • Optical Design: ED Apochromatic Refractor
  • Aperture: 81mm
  • Focal Length: 625mm
  • Focal Ratio: f/7.7
  • Coating: Multi Coating
  • Resolving Power: 1.43 arc sec
  • Limiting Magnitude: 11.3
  • Light Gathering Power: 134x
  • Finder Scope: Optional
  • Focuser: Dual Speed
  • Back Focus (from rear edge of focuser body): 149.0mm
  • Back Focus with Reducer (from rear edge of reducer): 63.5mm
  • Adapter Thread: 60mm/50.8mm
  • Astrophotography: Prime Focus, Eyepiece Projection & Afocal Imaging
  • Visual Back: Compression Ring
  • Optical Tube Length: 23” (585mm)
  • Optical Tube Diameter: 3.5” (90mm)
  • Outside Dew Shield Diameter: 100mm
  • Optical Tube Weight: 5.1 lb
  • Accessories: Tube Rings
  • Available Accessories: Flip Mirror Diagonal; Dovetail Plate; Red Dot Finder; Carry Handle

Reviews

Write Your Own Review

Only registered users can write reviews. Please, log in or register