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. I was just wondering whether the registration should converge at some point or there's an iteration limit...
Trying to register in mosaic mode: data from C8EHD .7 reducer ASI294MM Pro Bin2 (1425mm FL 4.67nm pixel size) and RedCat 51 (248mm FL 4.67nm pixel size). The computer I'm using is 12-core AMD Ryzen 9, 64GB RAM (32GB for APP Java VM), 3000 CUDA cores. CPU had been at 100%, almost 100 iterations so far, crunching for 12 hours straight. Should I keep waiting for it or it's stuck for good?
@mseningmail-com How many subs are you processing? Aren't you sure the answer is here:
https://www.astropixelprocessor.com/community/postid/5135/
In other words, first process the individual panels and then combine them?
Well I processed individual panels but not sure how to combine them. I ended up with 4 integrations (Leo Triplet - M65, M66, NGC3628 shot with C8 @ 1425mm focal length in LRGBHa with ASI294MM, and wide view shot with RedCat 51 @ 250mm focal length in RGB with ASI294MC - same pixel and sensor sizes).
I tried the mosaic registration but was unable to register the closeups of the galaxies to the RedCat's wide field. It looks like M65 & M66 panels overlap, but there's a gap between them and NGC3628 that I was hoping to cover by pinning them to the wide image.
The 5x difference in focal length between my scopes and star sizes turn out to be a headache here.
Any tips on combining?
As for the number of subs, I had 3x (15 subs per channel) = 175 subs from 294MM Pro and 90 subs from 294MC Pro. This was taking over 12 hours when I stopped processing, and it seems like every iteration after 50 had RMS difference of 0.0094. 12-core (24 threads) 3.7GHz CPU with 32GB RAM allocated to Java VM.
For mosaic registration, I had to add the integrations as Light frames, correct? And they are already calibrated and normalized so I don't need to specify any calibration frames at this point; if I were to integrate I'd have again each channel get combined separately because I chose "all sessions/each channel" setting in Integration tab.
