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,
if you record with a mono in RGB, and record 2 hours red, 1 hour green, 1 hour blue. Does this affect the colors in the image because more of red was recorded. Does it make the image more red? Or is that normalized somehow when stacking? Or is it recommended to always have exactly the same time in all 3 channels?
It can affect the color yes, but normalizing them should make that work. Afterwards you can, especially with mono data, also combine and mix them in a way that you like. I would recommend to have a bit of similar integration time between channels indeed, it just makes things a bit easier and adding data with more noise also makes it just a bit less nice for the data with better integration time, but it is totally possible.
Thank you for your explanation. Basically, my goal is always to achieve an identical time in all 3 channels. But you know, the weather can have a negative influence on the goal.
Yes for sure, so you can always do it the way you proposed, just saying it can be better with similar time. But I'd suggest to just try it and see.
