Re: Suddenly stars are dashes with good guiding

Geof Lewis

Hi Chris,
Yes, any slop in the guide assembly, e.g. mounting, camera, focuser, etc., can lead to differential flexure and it can be a real pain to isolate and fix. You mentioned that it appears in the same portion of the sky, so I’d be looking for gravity kicking in at that pointing location, as that may be the straw that’s breaking the camel’s back. Good luck tracking it down.


From: <> on behalf of Chris Carlton <pselaphid@...>
Sent: Monday, July 13, 2020 9:36 pm
Subject: Re: [ap-gto] Suddenly stars are dashes with good guiding
Have to admit I didn't think of that, but am aware of the problem. I broke everything down and reinstalled the guide scope between the two sessions. I typically tighten those guidescope mounting screws good and tight, but that's another thing to check. I wonder if the mounting screws on the focuser itself or the guide scope mounting bracket have worked ever so slightly loose? That would cause the same issue. I'll check that too. Thanks.

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