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Product Discontinued by Manufacturer

Vixen ED81S Telescope w/ AP-SM Mount has been discontinued by Vixen and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Telescopes yourself to try and find the perfect replacement for you!

Product Info for Vixen ED81S Telescope w/ AP-SM Mount

An amazing tool that will both meet and exceed your observation needs, the Vixen ED81S ED Achromatic Refractor Telescope 39984 features "Super Low Dispersion Glass" in the objective lens. The SD Glass in the Vixen ED81S Refractor Telescope suppresses residual chromatic aberration far under the threshold of visibility producing sharp, high contrast images for both the visual observer and the astrophotographer. The Vixen ED81S Refractor Telescope features fully multi coated SD Glass to deliver clear and high contrast viewing, virtually free of false color. The combination of better color correction from the new SD glass and brighter images from its fast f/7.7 focal ratio will satisfy the most demanding visual astronomer or astro-photographer. The ED glass uses environmentally friendly glass technology. The optical tube is very stable yet light weight. Vixen's Dual Speed Focus, standard on the ED81 Refractor Telescope, provides fine focus adjustments for 1/7th speed focusing. For an outstanding way to be sure you have a top of the line telescope that won't let you down when you're expecting results, choose the Vixen ED81S Refractor Telescope w/ AP-SM Mount.image

Specifications for Vixen ED81S Telescope w/ AP-SM Mount:

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
Optical Tube Length: 23" (585mm)
Optical Tube Diameter: 3.5" (90mm)
Outside Dew Shield Diameter: 100mm
Optical Tube Weight: 5.1lb
Accessories: Tube Rings;
Available Accessories: Flip Mirror Diagonal; Dovetail Plate; Red Dot Finder; Carry Handle Specifications
RA Slow Motion/DEC Slow Motion: Worm and Wheel Gears with 140 Tooth whole circle micro-movement
RA Axis: 59mm diameter, aluminum alloy
DEC Axis: 59mm diameter, aluminum alloy
Azimuth Adjustment: Twin screw knobs About 1.4° per rotation
Altitude Adjustment: Latitude between 0° ~ 65°,with a tangent screw bolts about 1.9° per rotation
Number of Bearings: 7 Pieces- Ball Bearings
Counterweight Bar: 20mm Diameter Steel
Counterweight: 1.0 Kg
Optional: Drive Motor
Optional: Pulse Motor RA
Tracking/Slewing: Manual Operation
External Power Supply: Unnecessary
Loading Capacity: About 13.2 lbs excluding counterweight
Tripod: 6.6 lbs; Height 21-45.5"

Features of Vixen ED81S Telescope w/ AP-SM Mount:

  • Super low dispersion glass supresses residual chromatic aberration
  • Multi-coated SD glass
  • F/7.7 focal ratio
  • Dual speed focus
  • Lightweight and stable optical tube
  • Visual Back
  • Compression Ring

Package Contents:

  • Vixen ED81S ED Achromatic Refractor Telescope 39984
  • AP-SM Mount

Related Products to Vixen ED81S Telescope w/ AP-SM Mount

Vixen ED81S Telescope w/ AP-SM Mount Unavailable & Discontinued Models

List of Unorderable Models

  • Vixen AP-SM Mount w/ED81S Telescope 39984 , MPN: 39984 , UPC: 811971017795 , Code: VI-TS-39984
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