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.
How do I combine data from two imaging sessions of the same target?
I have imaged M81 over two nights, but used different exposures between the two sessions so I need to use different dark frames and different flat frames along with the light frames. My first approach was to calibrate and stack two data sets independently, then stack two integrated frames. However, APP does not want to do that as when I select the two integrated frames and attempt to do anything APP reports 'no lights' and refuses to do anything.
What is the correct APP way to combine data from multiple imaging sessions of the same target when the calibration of the lights requires different calibration frames for the two sessions?
This topic was modified 8 years ago by Mabula-Admin
I have imaged M81 over two nights, but used different exposures between the two sessions so I need to use different dark frames and different flat frames along with the light frames. My first approach was to calibrate and stack two data sets independently, then stack two integrated frames. However, APP does not want to do that as when I select the two integrated frames and attempt to do anything APP reports 'no lights' and refuses to do anything.
What is the correct APP way to combine data from multiple imaging sessions of the same target when the calibration of the lights requires different calibration frames for the two sessions?
It is possible to load a previous integration as light, but in 1) LOAD you will need to disable the automatic recognition of Masters & Integrations 😉 I will try to make this easier in the next release.
But having said that, indeed do try to process all at once using the multi-session mode in 1) Load 😉
