Tele Vue 0.8X Reducer - 400mm - 600mm Telescopes
The TE-TRF-2008 0.8X 2-Inch Reducer/Flattener for - 400 mm to 600 mm Telescopes by Tele Vue:
This reducer converts TV-85 to 480 mm f/5.6 and Pronto to 380 mm f/5.4 for flat field, fast photography. Fully multi-coated 3-element unit inserts directly into 2-inch focuser, accepts standard T-rings for 35 mm cameras. Also it can be used with any 400 to 600 mm refractor.
Important Note: The Tele Vue 0.8X Reducer/Flattener for 400 mm to 600 mm Telescopes was designed for an optimum 55 mm back focus. (Distance from flange surface to film or CCD plane). If you use a CCD, be sure the spacing between flange and CCD is 56 mm +/-2 mm for best results.
Tele Vue 0.8X Reducer/Flattener for 400 mm to 600 mm Telescopes Review: "This accessory is a must-have for someone planning to use the TV-85 photographically" - review in Sky & Telescope, July 1999.
OPT Product Number: TE-TRF-2008
Note: All Tele Vue products are available to ship world-wide from OPT, and effective July 1, 2008, are covered by a Five Year Worldwide Limited Product Warranty! Always be sure to save your original packaging materials should you need to return any Tele Vue product for warranty or repair.
Questions & AnswersAsk a Question
Is this the flattener you recommend for the APM 105/650 Super APO Refractor? Thank you.
This reducer will not properly flatten the field for the APM scope in question as it is designed for smaller and slower f/ratio scopes like the TeleVue 76 and 85 - where it works very well. There are other flatteners by Hotech, Teleskop Service, and othe
Would this work well with an Astro-Tech 65 ATQ which has a 420mm focal length at F6.5?
Unfortunately, no. TeleVue told me that this is a reducer/corrector designed to correct coma and field curvature on small, fast, standard design refractors. With a flat field astrograph like the AT65EDQ, this will add those aberrations back in. You wou
Would be a good fit for a combination of an Orion EON 80mm ED (f/6.25 & 500mm) and Nikon D750 (full frame DSLR)? Thanks
Unfortunately, this reducer will only correct for an APS-C image circle. It does not appear that Orion makes a reducer for the EON 80 that will cover an image circle large enough for the D750, so your best bet will be to use a dedicated field flattener