Mar 28 2026 APP 2.0.0-beta40 will be released in 7 days.
It did take a long time to have the work finished on this and it will have a major performance boost of 30-50% over 2.0.0-beta39 from calibration to integration. We extensively optimized many critical parts of APP. All has been tested to guarantee correct optimizations. Drizzle and image resampling is much faster for instance, those modules have been completely rewritten. Much less memory usage. LNC 2.0 will be released which works much better and faster than LNC in it's current state. And more, all will be added to the release notes in the coming weeks...
Update on the 2.0.0 release & the full manual
We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.
Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.
Hello!
This is my first post here. I am currently on the trial version but will buy APP when the trial expires. It's a good piece of software with some pretty neat tools.Â
However, I've never been able to correctly apply my flats in APP. If I use the exact same flats and lights and stack them in a different program like Pixinsight or DSS, everything goes smoothly and I have zero vignetting left. So it's not bad flats or anything, it must be a software/user error issue.
In APP I get really weird results. Almost as if my flats are inverted, so I also tried inverting a master flat in Pix and then integrating that in APP. Did not work.Â
I am really desparate to solve this issue. Any help is welcome.
 Here is the l-calibrated view.
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Flats were 3-4 seconds each. 3,6s for this particular filter set (SII). The problem occurs on all three sets though. I did not take dark flats but I have bias and darks. Camera is a 294mm
Would you be able to upload 10 flats, 10 bias, 10 darks and 10 lights for me to check? It may still be an issue in the data so would be nice to see what's going on.
Not meaning to hijack this thread (so feel free to delete if this is irrelevant), but Vincent, could this be related to my issue at https://www.astropixelprocessor.com/community/main-forum/creating-a-master-dark-flat-what-am-i-doing-wrong/#post-25977 (i.e. the master flats Ben is making in APP (as opposed to his processing in other software) have too high an ADU in some way?)
I can't tell to be honest, I do know it's never a good idea to mix programs for processing calibration files with lights. The way calibration is done does differ sometimes, not usually in the way you're experiencing though.
