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Hi Mike, Thanks a lot for taking a look at my data. The internet says 12 bit per colour channel for the Sony SLT58. It is from 2013…and maybe time to replace it... I recognized the same effect with the binning. The camera has a pixel size of 4,3 µm combined with the 400 mm focal length I already got...

Hi Jochen, you are right M31 is challenging. Very easy to get first results but also with challenging HDR parts. Thanks a lot, I will try the vertical rectangles :-) My best attempts were vertical rectangles which included the core, M110, and at least one bright star, but also extended up/downwards ...

Hi Mike, Filmdev was just used for checking the stars (no panic 😉). The overall outcome of M31 in Filmdev was nothing in comparison to Autodev and I usually never use Filmdev. The only advantage was that there is not this ring in the stars. You know it is just a tiny ring but if know that it is ther...

Hi everyone, Sorry the images in my post above are not in a good structure to read. Therefore again in one post, hopefully better organized. 1 Start – Crop - Wipe – Crop – Autodev - No ROI – Full FOV 2 Wipe-Crop-Autodev-No ROI 3 Wipe-Crop-Autodev-ROI-M31 Core 4 Wipe-Crop-Autodev-ROI-Star 5 Wipe-Crop...

Hi Jochen, thanks for your reply :thumbsup: . I think too that stacking is ok and hope the APO is ok as well:-). My testing showed that Autodev seems to bring in this rings in my case. I will try to reduce them like you suggested in SVDecon later or avoid them by different star processing. Best Rega...

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Hi Guys, I did some further testing and compared Autodev and Filmdev. For this testing I choose a Stack of M31 which was done with the same setup and stacked in APP. I minimal cropped away the corners for wipe and reduced the FOW so that processing will be faster, afterwards Autodev or Filmdev follo...

Hi Mike and Dietmar, Thanks a lot for your replies :thumbsup: ! A lot to think of and read for me :-). The Ts Apo is not a Takahashi but also not so bad, so I hope it is saturated stars as you suggested. I was also thinking of the reducer in the optical train maybe a reflection that causes that? I w...

Hi Dietmar, I found possible solution. The RGB-channels are not focused correctly due to the refractor triplet limitations. I took a look at the single frames and into the stack per RGB-channel. If I combine R and G channel a ring occurs. I read something about that when the CN-User TheElf tested th...