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.
I'm trying to create a mosaic of two images, but during integration I have this error. The two images are created with APP, of course.
Any help appreciated.
Helge
Edit: I just found that despite this error that occurs about 86% into the integration, the mosaic files have been created.Â
Edit 2: I seem to have been a little hasty with the above edit. The Ha data turned out correct but OIII is a mess. In addition APP claims that it is one color file and one monochrome file, which they are not.
And here is another error msg.
Hi Helge (@heno,
Were you able to solve this issue in the mean time or not?
The 2nd error indicates that you were using a Multi-NB algorithm in 0) Color Settings, right?
And the 2 ste error indicate a problem with normalization indeed, between 1 and 3 channel data.Â
To me, the errors seem to indicate that APP is still debayering the data of one of your stacks, allthough they should already be debayered.
Mabula.
So I think I cracked it, finally. I'm not sure if it is meant work like this or it's a bug. but is was the same "problem" in both Ha and OIII mosaic.
Under Registration I set the number of stars to 2000. The normalization failed, but I did not get an error message until I pressed integrate. That was the first message above. I noticed that (when working with OIII) the star count for one of the images was 1320. So I changed the stars in Registration to 1200. Bingo!
Same with Ha. Started out with 2000, normalization failed, found that star count was 520, changed number of stars in Registration to 500. Another bingo!
So there it is. If the star number set in registration is higher than the actual star count, normalization fails.
Besides, I'm pretty sure that the star count is wrong, especially for the Ha one. It's packed with stars. I could have counted 500 blindfolded! 🤣Â
Helge
