2026-10-09 APP 2.0.0-beta48 has been released !
This is mainly a bug fix release for the reported bugs in beta47. In addition it has a significant User Interface performance improvement noticable when you need to process 1000s of images in APP.
2026-10-03 APP 2.0.0-beta47 has been released !
This is a very big release... many code optimizations/rewrites, many parts of APP are much faster and more precise, especially star analysis and registration are much faster ! Big mosaics will go much faster 🙂
And we introduce a new preview filter, which includes the new Adaptive Deep Sky Stretch and a General Levels Stretch, this has been long over due. The old preview filter (the panel on the right side to stretch and preview your data) has not been updated for a couple of years and it is a critical part of any APP session.
Adaptive Deep Sky Stretch or ADSS is a much more intuitive stretch algorithm. It is also color preserving (which is a great new addition in itself ! ) which means that the highlights are no longer bleached, color is maintained from the linear data while stretching. You can simply stretch your data using the sky background level and signal width sliders which work much easier and more intuitive. You no longer need to fiddle with the old complicated sliders with zoom buttons. All the zoom buttons for the sliders are made redundant. And you can enter slider values in the slider value fields yourself. I will make a youtube video in the coming days to explain and fully introduce ADSS. Once the video is ready, it will be highlighted on the forum.
RGB Combine upgrade !. The RGB Combine Tool has been rewritten mostly. The tool is faster and easier to use and most importantly, the Luminance slider to inject a luminance channel or channels into the RGB composite is now working correctly. It no longer bleaches the RGB colors. Combined with the new ADSS preview, you will get much better and easier great composites with great color! I will also explain this in a new youtube video.
Hello hello everyone,
it would be boring, if there would be no issues or something else with this camera, especially with calibration etc.
A few session go it was everything fine, but now it cames back it seems.
I do everything exactly the same in every single session, also calibration frames. The only thing that changed was that I updated my AsiAir Pro a few days ago. Nothing other changed.
I do every Session at the end flats and dark flats with the same temperature and gain, the flats and darkflats also with the same exposure time and same gain and temperature as my lights.
My AisAir is runnign with the ZWO 12V adapter over my power tank and the 294 mc pro is running at the 12v output at the AsiAir.
Since two sessions/nights at M31 Narrowband I i have some calibration issues. The ampglow in thr right upper corner didn´t calibrate out fully, also the amglow in the lower right corner.
Like i said, I have do ALL things like every other session in the past and there was no such a issue.
What´s wrong here? I stack it in DSS, APP and AsiDeepStack but its the same issue in all this stacking programs.
I do last night test-based three flat sessions with 28k avg, 30k avg and 32k avg but the issue is the same.
Is it maybe the dark flats oder darks? Because of the banding?
In my 300 seconds light exposure in the asiair in preview is no banding.
Hope anybody can help me.
Best regards
Tobias
Hi Tobias, when I look at the histogram of the Masterdark and Dark Flat, I would say that the Dark Flat has an extremely high average value. That looks like a light leak.
Which then messes up the calibration and leaves amp glow residue in the image.
Regards.
@minusman Hm, you are right.... and at the bottom of the Masterdarkflat it looks like a bright stripe. Curious....
Maybe it was my head torch. When I let capture the darkflats I dismantle all the things that I don't use any longer and for this I turn on the head troch with the white and bright light....
Last night I shoot IC 1805 and after 4 hours integration time I have a similar issue. 😪 😪 😪 😪
ISSUE SOLVED
Guys, I made it. The ampglow now is completely gone. 
You all was right about the darks. The darks were he issue all the time.
And now I know about what you guys mean with the same temperature as the lights. The ambient tmperature. Thought alle the time -10° is -10° and works for all frames. But then I took my camera out to a clear night and put it on my scope and shoot the darks as close as possible at the ambient temperature as my lights from IC 1805.....and here it is, it was the key and works 100%!
Sorry for all the posts I put in here with my issue and sorry to annoy you all with that.
Cheers and Clear Skies!
