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Tele Vue TRF-2008 0.8x Reducer

BH #TETRF2008 • MFR #TRF-2008
6 reviews
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Tele Vue TRF-2008 0.8x Reducer
Key Features
  • Reduces Focal Length by 0.8x
  • Widens Field & Shortens Exposures
  • For Imaging Only
  • Requires Camera-Specific T-Mount
Tele Vue manufactures auxiliary lenses which significantly improve the quality of photographs you'll get with your telescope when used with a T-mount and 35mm or digital SLR camera.

The TRF-2008 0.8X Reducer converts the focal length and aperture of Tele Vue's TV-85 to a 480mm f/5.6 and the Pronto to 380mm f/5.4-but can be used with most 350-600mm refractors which have a 2" focuser.  Enjoy flat field, fast photography with managable exposures!

The TRF-2008 inserts directly into the optical path of 2" focusers and has T-threads upon it so that you just add your camera's specific T-mount SLR adapter adapter.

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Tele Vue TRF-2008 Overview

Tele Vue manufactures auxiliary lenses which significantly improve the quality of photographs you'll get with your telescope when used with a T-mount and 35mm or digital SLR camera.

The TRF-2008 0.8X Reducer converts the focal length and aperture of Tele Vue's TV-85 to a 480mm f/5.6 and the Pronto to 380mm f/5.4-but can be used with most 350-600mm refractors which have a 2" focuser.  Enjoy flat field, fast photography with managable exposures!

The TRF-2008 inserts directly into the optical path of 2" focusers and has T-threads upon it so that you just add your camera's specific T-mount SLR adapter adapter.

Tele Vue TRF-2008 Reviews

TeleVue Quality

By Kenneth
Rated 5 out of 5
Date: 2024-05-21

in truth I haven't used the focal reducer yet. I expect it will perform as all TeleVue products do. I am simply responding to their request for a review so they stop pestering me

High Quality, Fast, and Sharp

By David
Rated 5 out of 5
Date: 2015-02-23

I bought this flattener and reducer for my 80mm F6 (480mm focal length) Explore Scientific APO triplet for use with my Nikon D800 and Starlight Express Trius-SX814 CCD cameras. Using the TRF-2008 increased my f stop to 4.8 with a reduced focal length of 384mm. Field is sharp with no coma aberrations at the edges. You will get some vignetting and coma distortion at the extreme edges on a full frame DSLR. However, for me its not an issue since I do crop my images.

See any errors on this page?

question

What is the back focus distance when it is used with Explore Scientific 80mm APO refractor (Essentials version)?
Asked by: Mahesh K.
55mm
Answered by: Isaac G.
Date published: 2021-06-24

question

Is the Tele Vue TRF-2008 0.8x Reducer also a flattener and can it be used with an Explore Scientific ED102 refractor (714mm)?
Asked by: Anonymous
Yes it's a reducer/flattener. Can't speak to your exact scope, but I use it with a WO FLT98 (618mm) and it works great. 700+mm may be pushing it though; The spec from TeleVue is 400-600mm.
Answered by: Matthew C.
Date published: 2018-08-27
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