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 am trying to stack 1300 images in a Mosaic, and it tells me I need 1.4 TB of free disk space. Â
Is there something I can do to not need all that disk space, but still use all those frames? Â
I have only been using the program a few days and I can see its a very robust system, and it managed to stack 700 subs without much trouble (but wow it it take a while to stack). Is there any tips and tricks to manage that much data? Â
@nateman_doo Hi! Yes, APP requires a lot of temporary disk space to be able to process that amount of files. The best way is to split up the files into batches of 100 to 200 files and process those separately. When done you can load the integration results as lights (one session, no calibration data) and integrate those together.
Your best bet is to do integration in batches and then integrate the result. For example, you can do 7 batches of 100 files and then do an integration of the resulting 7 integrated files. It works well and with a batch size of 100-200 you'll get all the benefits of the rejection algorithms.
