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.
So this was my first time creating a mosaic of more than one column + more than one row, and I ran into an issue. So there are four panels so far
Column 2 Row 1 (C2R1)
Column 2 Row 2 (C2R2)
Column 3 Row 1 (C3R1)
Column 3 Row 2 (C3R2)
I plan on expanding thisout to be a 9 panel mosaic, but for the time being I have completed datasets for the above.
I pre-processed each panel to create my stacks for each panel, and then proceeded to load up the stacks to create the 4-panel mosaic. This is where I ran into an issue.
The join between C2 R1 and R2 towards the right of the frame had duplicated stars and didn't look right at all, all other joins between frames were perfect, so it was not what I was expecting. I was able to successfully created the 4-panel mosaic by creating a mosaic of Column 2 and Column 3 as seperate 2 panel mosaics and then merging the 2-panel mosaics to create the 4-panel mosaic.
Is this the expected way to create multi row, multi column mosaics?
Currently processing my 200mpx image, so cannot upload any image showing the issue just yet.
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Regards
Simon
Ok I think I know what the issue was, I still had same camera and optics selected, loading up all the files and making sure that was disabled makes it work like a charm.
