85mm focal length and reduction factor of about 0.5x that depend on spacing; 0.5x focal reducer effectively halves the focal length of a telescope for enabling lower magnification;
Mounting threads: 1.25 inch filter thread or 28.5x0.75 mm on one sides; the opposite end of this adapter has a C-mount that is 1 inch diameter with 32 threads per inch standard for C or CS mount CCTV type cameras with telescopes;
A wider field of view and shorter exposure times for astrophotography; 2 lenses for better correction: cemented together and coated; black-anodized aluminum housing;
This combination focal reducer and field corrector lens accessory works with all Celestron 5 inch; 6 inch; 8 inch; 9.25 inch; 11 inch and 14 inch Schmidt-Cassegrain telescopes
Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37 percent; converts f10 optical system to faster f6.3 for a significantly wider field of view
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