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,
I am stacking the results of three sessions for a total of 86 photos.
I asked APP to keep only 80 photos based on their quality.
APP shows that it has selected photo # 50 as a reference with a quality score of 317.03.
However, you can see that some other photos have higher quality (up to 322.82).
Is it normal that photo # 65 was not taken as reference ?Â
In addition, would it be possible to have a function to export the values presented to a csv file.
And finally would it also be possible not to sort the data by session when displaying the analytical graph ?
Thank you,
Robert.
Not sure actually, it may be that APP also takes a few other things into account. I'll tag Mabula to see if he has more input on this @mabula-admin
Hi @rbarbout & @vincent-mod,
The reference frame is chosen after 3) Analyse Stars, so the quality score at that moment is used to determine the reference frame. If you load frames of different filters or even different camera's, APP will take that into account as well. So A luminance frame will be used instead of a Red frame for instance 😉
After 5) Normalize, you will see that the quality scores per frame will have changed, because APP will have more analytical data about your frames. Hence, the score will be different and a different frame might have a higher score than the earlier chosen reference frame. And this is normally not a problem/issue that will affect the integration outcome.
Always automatic sorting on sessions is rather usefull I think, but I will see if I can add an option to not do this.
Exporting the data will come as well 😉
Mabula
Hi @mabula-admin and @vincent-mod,
Thank you for the answer, it all make sense now.
Glad to see that you may take my requests into account.
For the global sorting, it was a way for me to know of many frames to stack and how many to reject.
Even if I know that APP makes a smart use of even the lesser quality frames 😉Â
Robert.
