STARTEST IMAGES GALLERY
Type: Maksutov CassegrainAperture: 178mmFocal length: 2700 (f/15)Secondary obstruction: 38% (diameter)
startest Images copyright Markus Ludes (c) 2001
The outsidefocuse startestimage looks to me in the eyepiece morecontrasty, I would rate this scope to about 1/5~1/6 wavefront p.t.v. and about 95%strehl"
Markus Ludes (APM-Telescopes)
Note: ronchi-testing with 254 lines/inch or 100 lines/cm.