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 tried doing my first 4x4 Mosaic, but somehow one of the four panels wont stack properly.
here are my settings:
i also tried checking the dynamic distortion correction, didnt change anything, except that the problem panel was the one opposite to M110.
and here a link to all my lights and callibration frames
https://1drv.ms/u/s!Ata7MsvIUtf3gcVgjQ2SHzHGKrt31A?e=gp1IxB
any ideas on what the problem could be??
I am doing my first mosaic in App also. I watched some video’s and just went ahead loading about 170 frames, made with an L-eNhance filter on a Rasa 8.
Great expectations... But, very disappointing: I got a nullPointerException in the module “Integrator”. Cause: null. pj.a (Unknown Source); pj.a (Unknown Source); pj.doInBackground(Unknown Source); java.swing.SwingWorker$1.call(SwingWorker.java:295)
A nullPointer in Swing... this implies it is not in the “background” processing, not in the “functional” processing, not in the “real APP stuff”, but only in the presentation on the screen. Therefore I think this is an example of a NullPointerException that could easily have been caught, but isn’t!
Mmm, well the registration mode should be "mosaic" and not "normal" for instance. Tab 5 normalize mode should be set to "advanced". Could you try that?
@vincent-mod I downloaded the latest APP release and did what you asked. I entered about 170 frames, divided over four panels of Pelican nebula and North America nebula. I gave APP 12 Gbytes of RAM memory. When APP was integrating I left the notebook (an HP Omen, 2 years old) alone. When I came back after 4 hours the notebook looked like hybernating. Perhaps that is the reason that the total integration took about 6 hours.
Anyhow, I am glad it works. I will try to find out why it took so long. Perhaps you have a tip for me.
The Mosaic-file is about 750 MBytes....
My conclusion is CrystalClear: APP does a great job here!
Excellent. In the future it's faster to first make the panels, then do the mosaic. Just FYI. 😉






