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.
To calibrate lights just with master flats (created with Sharpcap already bias subtracted) + masterdarkflat is impossibile: popup warning.
Why does flat (or master flat) calibration always need darks (or master dark) to work?
Applying darks (or master dark) to my lights, with asi533, often create more problems than advantages ( https://www.astropixelprocessor.com/community/main-forum/hot-pixel-final-integration-with-black-stripes/ ): so i come to conclusion, after days of experimenting, that using BPM solves that annoying problem of black stripes.
But it's impossible using just BPM: APP wants always darks (or master dark) to calibrate flats (or master flat)...I don't want to use darks...even because asi533 has 0 (zero) ampglow, so no need to use darks that introduce a problem in final stacked image (instead of improving it).
Thanks
I think it's better not to use Sharpcap or any other processor to calibrate your frames. They do things differently compared to APP and APP in this sense is superior with its algorithms to calibrate your data. Same thing for your flats, APP probably has no idea they were already calibrated.
Just load in your data + calibration data and let APP create the masters, that might actually solve your other issue as well... maybe.
