FLATTENER FOR APO 60/360 FPL53 TECNOSKY

FLATTENER  FOR APO 60/360 FPL53 TECNOSKY

1x flattener for Apo Tecnosky 60/360 mm refractor (or similar)
It is screwed directly to the focuser and ends with a thread M48x0,75.
Backfocus required 55mm, lit field of 42mm.
Designed for the APS-C format but guarantees good performance, even for the fullframe format.
Internally, it has a thread to insert 50.8 mm filters