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 used Sara's tutorials to try to build a mosaic. Â It consisted of 4 panels with 30 frames each. Â It has been processing for about 20 hrs now and is still going. Â It is doing something because the console changes so I know its not frozen. Â Is this normal? Â I am almost positive I copied the settings that Sara used. Â The cpu was maxed out for the longest time but now its at around 20% and still going.
My CPU is an i7 4770k and I have APP to use 12gb of RAM. Â The hard drive is some old 1tb drive, I am sure its slow. Can this be the problem. Â
Nevermind I think i found my answer in another post. Â Create each panel separately then do the mosaic.
Hi Netboy,
Yes, it's most efficient to first create the panels and then create the mosaic from the panels. The reason being: If you load all single frames (4*30=120) then the mosaic algorithm needs to find the registration parameters( for both the projective transformation and the and optical distortion correction) for all 120 frames all at once. This is a huge calculation and therefore will take very long. The calculation in the end finds 120 *16 parameters = 1920 ! parameters. If you create the 4 panels and then register them as a mosaic, the algorithm only needs to calculate 4x16 = 48 parameters and this should be finished in a couple of minutes on your i7 I think.
On a sidenote, in the next APP version 1.054 (which I try to release before mondag) a strongly improved mosaic algorithm is introduced which might very well give a better registration for the whole mosaic, it will be more robust and quicker. Details here:
Kind regards,
Mabula
