To sharpen the format of your 35mm film format, TeleVue have produced Field Flatteners (or focal reducers) that will screw into their 1¼" or 2" standard camera adaptors.
0.8X Reducer/Flattener converts TV-85 to 480mm f/5.6 and TV-76 to 380mm f/5.0 for flat field, fast photography. Fully multi-coated 3-element unit inserts directly into 2" focuser, accepts standard T-rings for 35mm cameras. Also it can be used with any 400-600mm refractor.
Is a 0.8x Reducer for all NP and NPis scopes used with imagers of up to APS-size format. For NP101/127 (non-"is") it requires the RAD-1074 Reducer Body Adapter for 2" focusers (see below).
Is a 0.8x Reducer/Flattener for TV-102 and TV-102iis scopes and any 800-1000mm focal length refractor for imaging with up to 35mm camera formats. For TV-102 (non-"iis") it requires the RAD-1074 Reducer Body Adapter for 2" focusers (see below).
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