Quote:
Originally Posted by glend
The primary mirror is not equal to the front aperture. I used to own one, I know.
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Is it smaller than the front aperture? All catadioptrics or cassegrains I've played with had a primary larger than light path entry as to clip the spider vanes bolts or other attachments, same for the secondaries. They have a slightly oversize disc that covers any bolts or protruding bits. Never seen a GSO RC though. They might do things differently.