Type: Schmidt Cassegrain
Aperture: 203mm
Focal length: 2032 (f/10)
Secondary obstruction: ?? mm (??%)

Inside Focus

Inside Focus

Outside Focus

Outside Focus

”the telescope is smoothly overcorrected, a rating is extremly difficult, but I would say less than 1/2 wavefront p.t.v. Strehl maybe in the 70~80% area.It shows also some kind of zones and turned edge.

Markus Ludes (APM-Telescopes)