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,
I am trying to stack around 2400 subs of 10 seconds. The reason for so many short subs is that I am using an Alt-Az mount.
The problem I am facing is that when I reach the integration step it stops and requires around 1500GB free space which I don't have.
Is there a way work around to solve this problem?
Yes, you have to chop up the data in like 100-200 subs per integration (or as many as your system allows) and then in the end, integrate the integrations. 2400 subs is indeed a very high amount and would require a very big system to process all at once.
Thanks a lot for your help Vincent. I am just new to this software and astrophotography and appreciate your help.
So you mean I should run the process from 1 - 6 for each batch of subs (say 200 subs) and save the integration of each batch and then upload them to process 6 and integrate all?
Basically yes, you tak say 200, integrate them (integration result is saved to your working directory and with that many subs I would probably organize that a bit to another folder). Then at the end, you load the integrated results back in as lights and integrate them (without calibration data of course).
Clear explanation. Thank you
