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.
For some reason, my Light Pollution Removal model is in the wrong bit depth. The gradient changes are not smooth like they normally are.
Â
Â
Â
Hmmmm, 6 months and no reply. I guess no one else has had this issue?
John
I've never seen this happen in APP. I'm assuming that you have checked the actual bit depth of your lights - you haven't accidentally switched to 8 bit captures ?
I have to ask why you are using such large selection boxes and why they overlap. I always use small, non-overlapping selections. I vaguely remember reading years ago that that is best practice. I may be talking rubbish here but I wonder if using large overlapping boxes has upset the math used to derive the correction model ? I guess if you redo it with small non-overlapping boxes and the problem goes away then you have a likely answer, otherwise I'm stumped. 🤔Â
JC
Hi John @johnbsys and @connor231,
Can you check the bitdepth of the light/integration that you are trying to correct? I have never seen the model like this on 32bits data, so it could be that your data is indeed 8-bits. If it is not, maybe you can upload/share the file that you are trying to correct? Do you see this problem in the latest version 2.0.0-beta38?
Mabula
@mabula-admin Thanks Mabula. Â I saw that Beta38 is out but I have not downloaded it yet. Â I will check my images bit depths the next time it happens. I am at a star party now for the weekend. Â I will download 38 and try it out.
Â
Thanks,
Â
John Baker
Great John @johnbsys,
Please let me know if you need more assistance with this and/or if the model looks again like that 😉
Mabula
