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.
Hi,
Last night I told APP 1.075 on Linux (ext4 filesystem) to integrate 20-odd sessions ("Integrate all"). Due to the way integrations are named, this resulted in a too large filename. Like most filesystems, ext4 has a 255 character limit. So the entire process failed after several hours, just before attempting to write the integration to disk with an error like: "filename is not supported or file is locked by another process". (unfortunately I did not take a screenshot but you probably get the idea)
I guess my feature request would be for APP to either predict that the filename will be too large before the integration starts or catch the error at the moment it occurs. The best would be for the user to be prompted for a filename much like what happens when saving an image from the Tools section, alternatively APP can simply truncate the filename into something reasonable.
Thanks,
D.
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[edit: I had mistakenly written 0.75 instead of 1.075 as APP version]
Yes, I've seen this issue raised before. I'll notify Mabula about it.
So I asked directly and he'll fix it for the upcoming release in about a week.
