Mike,
Did you do deconvolution? This looks like dark rings that can be caused by
deconvolution. I think there is a global dark setting you can raise or lower
(forget which) to help with this. It also helps to have a star mask when you
do deconvolution.
Thanks,
Bernard
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx <az-observing-bounce@xxxxxxxxxxxxx>
On Behalf Of Michael McDonald
Sent: Tuesday, June 11, 2019 4:24 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Fungus eating the stars?
The other night, I was imaging the Trifid Nebula. When I processed the subs
in PixInsight, a bunch of the stars had this crud on them:
http://www.mikemac.com/Astrophotos/fungus-eating-stars.png
Anyone have any idea of what weird processing error on my part is causing
mess?
Mike McDonald
mikemac@xxxxxxxxxxx
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