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Off axis guiding with RC scope - badly shaped stars
Hello all
Could I have some help please.
I use an OAG with my Sharpstar 65Q and it works perfectly, no problems at all and get 30 min subs.
Swap the camera/OAG/filterwheel assembly to the 6"RC and I can't get correctly shaped stars to guide on. If I de-focus the OAG it appears that the stars are semi circles or blobs. It is like the light is being partially blocked by certain internal parts of the RC scope, maybe.
I have altered the distance that the prism protrudes into the light path but doesn't make much difference.
I usually get enough of a part of a star to guide on but it is not ideal.
People obviously guide with much bigger RC's than mine and get results that require good guiding so I assume there is a solution to my problem but I need help at this stage please.
Thank you
Jeremy
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