Accessory
Astro-Physics F7.7 Field Flattener for 160 f/7.5 StarFire EDF (160FF)
Astro-Physics · F7.7 Field Flattener for 160 f/7.5 StarFire EDF (160FF) · field flattener / reducer
Key specifications
| Accessory type | Flattener/Reducer |
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All specifications
| Interface | 4" focuser front; AP TCC-series camera adapters at rear |
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| Compatible with | 160 mm f/7.5 StarFire EDF |
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About
A prime focus field flattener made specifically for the 160 mm f/7.5 StarFire EDF and its 4-inch focuser, which images at an effective f/7.7 with the flattener in place. Correction is essentially diffraction-limited over a 76 mm circle covering 3.5 degrees of sky, suiting CCD, DSLR, video and 35 mm film cameras.