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.
[Sticky] DSLR - calibration masters, BPM, have different size ?
This question was asked by @peju, I have moved this to a separate topic:
Dear support,
My Master D/F are pre-made for each iso, expo and separated for each camera model Im using. and follow the instructions how to made them. Now I noticed they coming out with a different pixel size than the subs.
The APP told me that these M-F/D is not same size as the subs and will not be used in the process.Â
For DSLRs, the sensors are bigger than the image dimensions of the regular frames. All frames have raw borders and these are removed in the raw conversion as a final step. All raw converters do this.
APP calibrates all DSLR data using the whole sensor. So all Masters and Bad Pixel Maps will have image dimensions of the whole sensor.
So the difference in image dimensions are the raw borders that are cut-off from frames. The raw borders usually don't contain any usefull data so we need to crop them away.
@peju, If APP tells you that the calibration masters don't have the correct size for the light frames, than you are not loading the original CR2 frames for calibration, which you must do.
You are probably loading fits files that were processed already?
