- Reduces Focal Length by 0.67x
- Widens Viewing Field
- Shortens Exposures
- For Imaging Only
- Requires #3878 Adapter and a T-Mount
The Vixen Focal Reducer for the ED81S, ED103S, & ED115S telescopes is a high-quality reducer for imaging use, designed to shorten the effective focal length of your refractor.��Shortening the scope's effective focal length quickens exposures and widens the field of view.
To use this focal reducer, you'll need both the Vixen #3878 Direct Wide Photo Adapter and a camera-specific T-mount for your SLR camera.��The outer portion of the T-mount is removed, and the remaining element of the T-mount affixes to the Direct Wide Photo Adapter.��You then attach both pieces on to your SLR like a lens, and on the other side of the Direct Wide Photo Adapter you screw in this focal reducer.��Together your SLR + T-Mount + Direct Wide Photo Adapter + focal reducer thread in to the rear of the focuser barrel upon the refractor.
- With ED81S, effective focal length & aperture becomes 419mm f/5.2
- With ED103S, effective focal length & aperture becomes 533mm f/5.2
- With ED115S, effective focal length & aperture becomes 596mm f/5.2
In the Box
Vixen Optics f/5.2 Focal Reducer for the ED81S, ED103S, & ED115S Scopes
| Dimensions | 3.0 x 3.0 x 2.0" ( 75 x 75 x 50mm ) |
| Weight | 0.39 lb ( 175g ) |
| Packaging Info |
| Package Weight | 1.0 lb |
| Box Dimensions (LxWxH) | 2.5 x 2.5 x 1.5" |
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