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 all,
maybe it is a simple question and already answered, but I didn't found it in the forum.
I have gathered data for my M104 picture over two years now, yesterday I finished my 4th session since 2021. I created a stacked image for every session and created images were I loaded all of the lights, flats, darks and darkflats for all of the sessions so far.
My question: what is the best way to stack the sessions? Stacking the session stacks or begin after each session from the beginning and load all the subs?
In principle, when each of your stacks consist of at least 40 or more subs, those can be combined to give a nice result. Personally I may go for something like 100 frames per stack and then combine those for the final result.
Hi Vincent,
thank you for your reply 🙂 Ok, so since I have less than 40 images per session I will stack the single lights.
regards
Jürgen
If in total you have like 300 subs, you may still want to go for 100 per stack, just to go easy on the system. 😉
