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.
New to APP but have had some great results with other images. I stacked a 2 panel Ha mosaic I did but I have some strange warping near the middle of the the first panel. I did add some data to the top panel that was slightly to the right and bottom of that panel with a dual band filter to help fill in a gap I had. Its from same scope and camera though. Would this be the issue since those panels were very close to the same spot?
So my Ha stack just finished with just the 2 panels and the warping is not there... Is there a setting that would allow me to add the extra data and avoid the warping?
How many stars did you use for star analysis? Upping that to about 2000 should help.
@vincent-mod
Just the default setting. Ill try upping it and see how that works. Thanks for the reply!
Ah, so for mosaics you’d want to select some other options, like Advanced mode, 2000 stars, not the same camera and optics and dynamic distortion correction.
