MAY 4 2026: APP 2.0.0-beta44 has been released !
New improved internal memory controls should now work on all computers
May 1 2026: APP 2.0.0-beta43 has been released !
Improved internal memory controls (much more stable and faster on big datasets), fixed CPU image viewer, fixed Narrowband extraction demosaic algortihms.
Apr 29 2026 APP 2.0.0-beta42 has been released !
New improved Normalization engine, Fixed random crashes in integration, fixed RGB Combine & Calibrate Star Colors, fixed Narrowband extraction algorithms, new development platform with performance gains, bug fixes in the tools, etc...
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.
I am trying to process images in APP and can't get it to work with my SCT. I have used APP in the past with my refractor images and everything seems to go smoothly. For the last few nights, I have been taking photos with a 9.25 Celestron SCT and I keep getting very fuzzy stacked output. The individual frames look OK, but when I stack them I get a very fuzzy looking image. I'm sure I am doing something wrong, but I can't figure out what it is. I've tried shortening exposure times and playing around with APP settings, but I still have the same problem. The guiding seems decent. I've run out of ideas. Can you help me? I've attached an individual sub and a typical stacked result. Thank you!
Whoa! That is very strange. If single images are ok, try stacking without calibration. First I do normalize, then throw out any image that is below .8 on image quality or star quality - You may have some really bad images that are getting into the stack. Then integrate. If it's all good then your calibration needs to be looked into.
Thank you for your suggestion- I never would have thought of that one. It didn't seem to make much difference, but I tried using smaller numbers of raw images. The blurry stack I posted is 290 frames. If I just stack 15 or so, the result is still blurry, but not as bad. As I add more data, it keeps getting worse. Does that suggest anything?Â
For what it's worth, I think I got the issue sorted out. I uninstalled APP and re-installed it with all the default settings. That seemed to work, although I don't know exactly why. It's strange that the older settings and version worked OK with other data sets, but not the recent SCT info. I hope this continues to work.
Hi Michael,
That single sub looks good to me so I would not expect that result for the final image with the default settings. Can you show some screenshots of the settings in each of the steps? Or I believe you can somehow set the settings to default and maybe stack again to see if you get the same result. Â
Tom
Hi Michael,
I see you got it figured out. Your post must have gone up while I was writing mine.Â
Tom
Thanks Tom-Â you nailed it!
