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.
Hi, in my actual image I get strange mosaicing effects in the RGB combination tool. It produces tiles in the upper part of the image that show parts of the image below. I have an example attached.
Is there an idea what happens?
Best regards
Pete
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Oh that is a new one. Can you tell me what exactly you did before getting this result (your processing steps) and what kind of data you're combining? Is everything behaving normally otherwise?
@vincent-modÂ
Thanks for your response, Vincent. I am APP user from its first hour. Never experienced this behaviour before. With these data it apperared repeatedly. So I finally combined the channels in PS. I combined 4 stacked files of L, R, G and B data of this frame: https://astrob.in/full/abifgz/0/ . All other functions of APP behave normal.
Peter
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Edit: I just tried it once more and this time is was Ok (after it had been wrong at least 10 times before in different editing sessions). So if my issue is singular and nobody else has experienced it yet maybe is better to wait if and when and how often it will reappear or not.
That is interesting. I'm almost thinking you may have an issue with your system maybe, you aren't using an external disk to work on?
The system is stable since many versions of APP 🙂 I have a 2048GB internal SSD that is 1/3 filled as a workspace for APP and another 1024GB SSD for the other "hungry" programs like PS and LR. So the system should not be the culprit. I will try to reproduce the fault and come back to you with maybe more information. I was able to finish the image with SNR 110.3 +11.3 VdB 152 and DeHt-5 last weekend and in my eyes it is another proof for APP's phenomenal ability to produce superflat, gradientfree and well calibrated masters that allow a very deep processing:
Full Res.:> https://astrob.in/full/abifgz/0/
Pffff, that is a very very nice result. Maybe you ran into some memory hickup somehow.. hope it'll stay away.
@vincent-mod
Hope so too. Memory hickup while combining the channels is not on my list to be honest. We'll see, I'll keep you updated. Thank you once more for the support, Vincent.
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CS Pete
Yeah, not really on my list either, just guessing out load. 🙂 Seems weird it only pops up that time, that's why my mind was going there. Anyway, thanks for reporting and continuing to look out for it! If it happens again, I'll ask for the data, maybe we can then replicate it.
