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.
Â
Only darks and bias
Â
darks bias flats
My guess would be that, since it only happens when using the hyperstar, something is not going right while taking the flats. There must be some difference between the time you take the lights and the flats, apparently the vignetting is stronger when taking a flat frame. Very tricky to pinpoint what it is exactly without hardware access.
I've taken my flats the same way since I got the HS and it has only become an issue recently. I can't imaging why it's all of a sudden not workingÂ
Strange, no difference at all in the way you take the flats either? Did you use different bias frames or a different APP version (not that that would be the cause, bu just probing where there are differences 🙂 ).
Try doing your flats by imaging clear sky - before your imaging session. I'm not sure about hyper star but I saw once that putting a t-shirt at the end of the dew shield yielded bad results. I put the t-shirt right at the front of the telescope but the last time I did my flats I used the clear sky approach . Also, image train changes may result in bad images because of thinks like stray light. Did you change any image train components?
