STARTEST IMAGES GALLERY
Type: Schmidt Cassegrain Aperture: 203mmFocal length: 2032 (f/10)Secondary obstruction: ?? mm (??%)
”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)