 |
 |
Click on Images to Zoom    |
About the Vixen ED81S - 81mm Refractor Telescope OTA...When the Vixen ED81S - 81mm Refractor Telescope was introduced, it set a new standard for APO Refractors. 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 incorporated into the Vixen ED81S - 81mm Refractor Telescope produces clear and high contrast viewing, virtually free of false color. Vixen'''s innovative design 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, provides fine focus adjustments for 1/7th speed focusing. Vixen ED81S - 81mm Refractor Telescope OTA Features...
Vixen ED81S - 81mm Refractor Telescope OTA Specifications...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 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: 5.1lb Accessories Included: Tube Rings; Available Accessories: Flip Mirror Diagonal; Dovetail Plate; Red Dot Finder; Carry Handle Vixen Product Number: 5864 |
