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.
Hi everybody,
I would like to reduce the impact of the flats to my stacked image.
As you see the mild yello circle in the middle of the stacked image comes from the flat.
DeepSkyStacker is stacking these data in a more "mild" way, so that I can say that it would be very helpful to reduce the intensity of the flat correction.
Is there a way to reduce the "influence" of the flats?
Thank you and
greetings from Peter
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@sternefueralle There is no way to influence the way the flats are applied to the lights in APP. I am afraid that if you get such artifacts after applying the flats, that the flats are open for improvement. So you may want to review the way you take the flats in order to get rid of this effect.
@wvreeven Thank you for your answer. I worked it out and found an improvement, that helps me with my flats...sorra, it's my fault. CU
I made new flats with an exposure time around 4.6 secs and added dark flats for the first time. Now the master flat is more equal. Not so intense... this works.Â
@sternefueralle Yes, creating proper flats and using dark flats or bias frames to calibrate them is the preferred way. In my experience dark flats work better with modern CMOS cameras. Glad to read that you sorted out this issue.
It is strange, that this occurred suddenly. The correction frames I usually used worked very fine. But suddenly, I can not really say when, it behaved strange, as I showed. So I was confused and did bout know where the problem comes from, or better, how to solve... happy to have solved another problem in astrophotography...
