Ed2000
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Dear all,
I have changed to a new scope (SW Quattro150 F/4) and tried some imaging.
During processing, I have found some odd elliptical donut on the final stacked image. I did flocked the inner surface and covered all light-leaks. Collimated with laser and the stars looked fine.
The first image is overstretched to show donut. The second image is a overstretched flat.
I do need some help. Any comment and suggestion?
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Hello. How’s you latest experience in AsiAir Pro and skysensor combo? Does the auto guide work?
Odd donuts that can't be eliminated by flat
in Imaging - Image Processing, Help and Techniques
Posted
Thanks Michael.
I am using ASI533MC pro with the native coma corrector from SW Quattro 150.
The flat is fine in orientation during WBPP in pixinsight.
I am thinking whether the oval shape donut can be due to stray light. I did not use any dew shield on my Newtonian.