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 have what is a common problem with many refractors: the red and green channels can be focused sharply, but some of the stars under the blue channel are significantly larger. I think what is happening is that even within the blue filter passband there is still significant dispersion, i.e. the color blue-green focuses ok, but the color blue-violet becomes out of focus. When viewing the blue image UNSTRETCHED, most of the stars are ok, and maybe only a little wider, but when viewing STRETCHED there is a significant blooming of some of the brighter stars. So then when I combine the images, the stars have a blue ring around them.
Anyway, is there a way to fix this in the program? I tried the checkbox of align stars, but that didn't help.
No indeed, halos are tricky. The light pollution correction may work a bit for very large halo's, but I think only when it's more of a gradient coming from just outside the frame for example.
I'm not talking about giant halos - it's just a few pixels worth.
Yes, so my example was for these more giant ones. There it would still work, for smaller ones there is no real solution yet.
