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.
I keep getting the attached error when trying to register a high resolution version of this 4 x 1 mosaic (draft uncalibrated version attached which worked ok)
I've tried a heap of different settings.
Does anyone have any suggestions ?
(the computer is plenty powerful by the way with 56GB allocated to APP)
Thanks, Kelvin
Thanks for letting us know! If you could upload those frames to our server I can let Mabula know about it, seems like a possible software bug, thanks for notifying!
Go to https://upload.astropixelprocessor.com and use upload1 as username and upload1 as password.
Create a directory named “kelvin-hennessey-mosaicfailure” and upload in there. Thank you!
@vincent-mod ok they are uploading now but will take a long time as they are between 250 and 350MB each. I'll notify once complete
Thanks Kevin, I might not be able to process them myself even so I'll also notify Mabula when done. 😉
@vincent-mod my mosaic file have finished uploading.
@kelvin-hennessy Hi Kelvin, great data and beautiful mosaic. What I did is:
- tab 3:
- set the number of stars to 3000
- tab 4:
- set the patter to triangles
- scale start 5
- scale stop 15
- enable dynamic distortion correction
- disable same camera and optics
- set registration mode to mosaic
- tab 5:
- set mode to advanced
- tab 6:
- enable MBB and set it to 15%
- hit the INTEGRATE button
@wvreeven I still get the same error. I'll try restarting the computer and reloading from scratch - I may have changed other settings in my various attempts
@kelvin-hennessy The defaults are not saved when closing APP so no need to restart the computer. Is your data on the internal HD of the computer or are you using an external HD?
@wvreeven restarting APP (and the computer) fixed the problem. I hadnt restarted in a while and I only had 60GB free disk space - plus had been doing a lot of integrations. Maybe I experienced memory creep. I'll be redoing it all from scratch again soon once I get more data for the Omega region so it will be interesting to see if it happens again. Here's the draft result which I'm very pleased with



