STARTEST IMAGES GALLERY
Maksutov 180_2

Type: Maksutov Cassegrain
Aperture: 178mm
Focal length: 2700 (f/15)
Secondary obstruction: 38% (diameter)

startest Images copyright
Markus Ludes (c) 2001
Picture

Inside Focus

Inside Focus

Outside Focus

Outside Focus

The outsidefocuse startestimage looks to me in the eyepiece more
contrasty, 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.