Stellarvue SFF7 Field Flattener Field Flattener for 2.5
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Stellarvue SFF7 Field Flattener Field Flattener for 2.5" Focusers, 42mm T-thread

This field flattener for f/7 refractors slips inside a 2" focuser.

This is our most popular modular flattener designed for all Stellarvue telescopes that operate at a certain focal ratio. The lens inserts into the 2" focuser and uses a tapered insert tube to more accurately seat the flattener in the focuser. A DSLR adapter is included with t-thread. The spacing distance from the T-thread on the flattener is 55 - 56 mm so it will work as is with any DSLR camera that has a t-adapter. For other cameras including all ccd cameras, consult us. Usually, a thread extension is all that is needed. This flattener is designed for use with cameras having an APS or smaller chip. This is the majority of cameras on the market.


Our price: $295.00

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