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.
From my dou band filter processed file I split the file to R G and B. I extracted Ha and Oiii. Â
When I try to use the Combine RGB process, for R it loads three 'files' one for red, one for blue and one for green all based on the single R which had been split from the original. It wants to do the same for each of the 5 files I want to use.
In other tutorials in the forum, that I am trying to follow, I see only one R one G one B one Ha, and one Oiii, not 3 for each. Â
What am I doing wrong? Thanks.
Which APP version are you using? I kind of remember this issue on an older one. If you are on the latest, we'll go further in diagnosing the issue.
I am using the 1.083 beta 2. Â
 I am just trying to load the extracted Ha and Oiii into the channel combine. Today I learned that if I try to load an Ha or Oiii on which I had run LPC, then the combine loads the 3 RGB channels. But if I use the totally unprocessed Ha or Oiii then it loads once. Â
So I assume I am still climbing the learning curve.
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Mmm interesting, I wonder if that should be the case. I'll investigate that myself as well, thanks for the tip. If I find something I'll let you know!
