This is a reducer designed specifically for use with F8 Ritchey Chretien telescopes such as those made by GSO. When fitted, the reducer will lower the focal ratio from F8 to F6.4. The corrected field of the reducer is suitable for sensors up to 24x36mm.
The triplet corrector is housed in a compact enclosure and features an M68 thread for attachment to a camera. The backfocus distance to the sensor is 74mm or 82mm depending on if the sub adapter is fitted on the back of the corrector.
For mounting to a focuser, there is a choice of female M68 or male M78 threads.
