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,Â
i am trying out APP with the free trial and am trying to integrate some Fits files taken with an ASI1600MC.Â
MacOS version 10.12.5
error: java.lang.ArrayIndexOutOfBoundsException: 1
cause 1
mq.a(Unknown Source)
Hi Scott,
Can you show a screenshot of the error with the contents of the bottom file list panel so I can see what has happened with the lights during star analysis, registration and normalisation?
Another possibility would be if you could share your frames (dropbox, oneDrive, wetransfer) and I'll try to replicate the error to pinpoint where it goes wrong?
Mabula
I caught the mistake. I accidentally had a .tif file mixed in that had been selected as the reference frame. It was at the bottom of the list and I didn't see it initially. Once I removed the .tif file it stacked without problems.
Thanks,
Scott
Hi Scott,
Okay, that's good to hear, is there something particular about the .tif file why it possibly failed? Since it was selected as the reference I guess APP could read the .tif without problems? Could the fits files be registered to the .tif file?
Cheers,
Mabula
The tif file was an autosave from DSS created from the same Fits files I was trying to stack. I had opened it to play with the post processing options in APP and had forgotten it was in the file list when I went to try stacking with APP.Â
Okay, thank you for your feedback Scott.
If you need help or have questions about any of the post processing tools, you can post them in the tutorials and workflows forum 😉
