Quote:
Originally Posted by sl
Picture of corrector?
How large is the secondary obstruction? Is it an aluminised spot or separate mirror?
Is that standard 1.25-inch adaptor for eyepieces and T-thread at the back attached via an SCT thread or something else?
Any pictures taken through the telescope? What size is the image circle? Does it fill an APS-c frame?
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It is a Gregory 'spot' Maksutov-Cassegrain design so no secondary mirror.
Rear cell adaptor is standard for a 1.25" diagonal or t-ring and has an external M-42 thread.
I am not into AP and so I cannot answer your last question.
From discussions here today at Astronomy Academy it may be a 1980's Russian made scope, re-branded. OTA is solid aluminium, not rolled plate, and the rear cell is heavy and well made.
Philip