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 Maksutov180_1

Type: Maksutov Cassegrain
Aperture: 180mm
Focal length: 1800 (f/10)
Secondary obstruction:59mm (33%)

startest Images copyright
Markus Ludes (c) 2001

Picture

Inside Focus

Inside Focus

Outside Focus

Outside Focus

“This is a 180F/10 Maksutov Cassegrain . The central hole is slightly elongated due a not perfect setup against the collimator. The optics are very smooth and well corrected , my impression is somewhat between 1/6 and 1/7 wavefront p.t.v.”

Markus Ludes (APM-Telescopes)