Quote:
Originally Posted by jbloggz
I don't think it could be dew either, since it occurs in every shot, even ones that are taken well before any dew would begin. Here's a zoomed in view of a bright star from one of my other shots, which looks hideous!
Could it be a collimation issue? I use a laser collimator, but perhaps I'm not getting it perfect enough? I'm fairly confident it's not a focus issue, because I use a bahtinov mask for focusing.
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What about light bouncing of the the edge of the secondary mirror, especially if it is an untreated edge. Perhaps post a picture of the front of your telescope near the mirror.
Best
JA