Quote:
Originally Posted by JA
I recall reading of an issue with reflection artifacts with the ASI1600 caused by a lack of/type of anti-reflective coating on the sensor window. I also recall the image had faint diffraction type spikes in a 4/8 spoke pattern, which are also present and similar to those in your image, but I'm not sure. The spikes may have been caused by a diffraction/reflection from the prism of an off-axis guider. Did your image also use an OAG?
To try to verify the cause, perhaps a different type of filter could be trialled, with a different antireflective multicoating. Perhaps a photographic filter
Best
JA
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Thanks yes, microlensing is an issue in this series too (less so on the Lum channel here, but more pronounced on others). I expected to see it on this shot, so it was not a suprise. But I wanted this composition and I'm interested to try my hand at mitigating the effects of microlensing. If it all gets too hard I can always crop in, I guess.
Best,
Markus