Quote:
Originally Posted by Stephane
Thank you Sean for your reply. Yes I meant to thank Malcom. I’ve edited the reply.
I have been suspicious that I might have focuser leaks for some time. Any way of testing this?
In terms of the other weirdness, please let me know what you mean and if you have any ideas as to what could cause it. I was told I might need to paint some exposed bolts in the OTA as they might be causing me some problems - it at least cover them with black tape.
Thanks again,
Stéphane
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I've seen a beer can holder mod done to shield unwanted light around the focuser/adapter/photographic rain before. U could use any old thing really. I usually put on masking tapes around where adapters join just to be sure (e.g. the ZWO tilt adapter that's screwed onto the OAG).
Aside from the pretzel, what do your flats look like? Any reflection, etc. coming in? That'll at least tell you if it's coming in from the front of the tube, bottom, or focuser.