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 use ZWO ASI 294 coulor camera and in my process in APP i prepare the RGB frame by algorithm "Ha-OII color" because i use a double band filter (L-Enhance).
Than i extract the Ha frame by the algorithm "Ha-OIII Extract Ha", but this frame is much more noisy than the rgb frame.
Why this difference? is related at the use of colour camera and debayering action or exist some parameter to set in APP to improve this frame. (is the same for extracting OIII frame)
With Ha-OIII color, it creates an image that is a mix of the provided signals, so the signal to noise ratio will be better. Also this is an integration ofcourse, I assume you're talking about a full integration of the Ha extracted frames, not just 1 right?
Yes, i do integration of all my light frames with "Ha-OIII color" and after, for the same frames i run a new integration with "Extract Ha" and also "Extract OIII"
It may have more noise, but can you post screenshots of both the RGB and mono result so I can see how big the issue seems to be?
