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 ve stacked the individual panels but when I try to stitch the panels to make the mosaic I just cannot get a decent looking image at the end of it. 6 panels in total, I've forgotten how many integrations I've tried but all ends with the same result, have even tried stitching just 2 panels. Theres definately something I've done or left out as Ive done 2 mosaics before but this time I've hit a brick wall.
I tend to add all lights for everything (RGB etc) and assign to each channel and for all panes. Then add cal frames. Then make sure you choose the Mosiac option in 4. Registration Mode. Works fine but Ialso get the odd time it all goes mad...normally when I have ticked something wrong 😀
I know it works because I done this, been a while though.
https://www.astropixelprocessor.com/community/gallery/ic1396-4-pane-mosaic/
Look like there was no calibration done on the background at all. Did you use flats, LNC during integration etc.?
@vincent-mod
yes flats used and am sure I used Lnc, I will re-run with and without.
It will also help if you correct the different stacks before making the mosaic. So using Light Pollution correction etc. If you used flats, it might also be that they didn't work correctly?
@vincent-mod
I know its not the lights as I've re-run the process on my 4 panel IC1396 mosaic again and thats stitched perfectly, perhaps I need look at the individual subs?
Mmmm, maybe, the mosaic panels though look like something went wrong with correcting them individually. I might have to take a look at some frames of all panels (like 5 each) if you want..
Am away now for a few weeks but I did calibrate and stack the 2 panels sunday morning in Pixinsight and stitched them using App, they blended very well, so could there have been something wrong during calibration in App
? or perhaps the settings?
Maybe, but also here the frames aren't very well corrected in the background. I still think removing light pollution first from the various stacks might help here.
