Field Flattener For Fs-60C, Brings Focus To F / 6.2. To Reach The Correct Firing Position When Using The Flattener On Refractor Fs-60 Must Be Used Or The Rotator Dedicated Camera Or 2 Extension Tubes N ° 82 (Cod. Tka20583).
Meade Series 4000 F/6.3 focal reducer for Schmidt-Cassegrains. This focal reducer reduce the original focal lenght of the optical system from F/10 to F/6.3 and correct fields from residual aberrations.