May 27 2026 APP 2.0.0-beta45 has been released !
Fully Multi-Threaded LNC, many improvements for the registration engine, platform upgrade, and further tuning of internal memory consumption and memory release back to OS.
Apr 14 2026: Google Pay, Apple Pay & WeChat Pay added as payment options
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. I'm very new to APP but I have successfully used it to generate some nice images. On one dataset I seem pretty stuck though. By the final processing stage the image is heavily weighted towards blue. In the attached image I show different looks of the color histogram. If I look at a single light frame it looks as I would expect with all colors having approximately the same histogram .. however when I look at the same image in the APP viewer they are clearly starting to separate with Red being dim and blue being bright .. and by the final processed image it's comically .. blue ... I've tried to reprocess the same image multiple times just to see if I messed up a setting or cross-wired darks / flats etc. .. but I get the same result every time. Any ideas where things could be starting to go wrong?
The Camera is a ZWO ASI533MC-PÂ (RGGB)
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I figured it out ... if anyone else has this issue it was previously addressed in detail Here
It came down to the ZWO camera's white-balance gain factors in the FITS header .. there is a check box just under the histogram in the upper right to "neutralize-BG" which I must have unchecked at some point. This should be checked to properly white balance the image.
Cheers!
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Hi Andrew @cyberbub,
Thank you very much for posting this topic.
I actually fear that something still is not enitrely right here. If all were okay the final stacked image should have the histogram peaks for R,G,B at the same point provided that in 5)Normalize neutralize background is enabled. Do you have it enabled or not? If not, does it come out right then when you enable it without having to use the neutralize-BG option ?
Mabula
