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.
I'm getting Satallites across light frames from time to time. Should I be eliminating those frames from the Light files list before processing them, or does the Satallite line get eliminated during the integration or calibration process? Here is an example of a fits file with a Satallite line going across it attached.
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It depends upon the algorithm you are using during integration. If you use a simple "average" stacking mode for your lights, then the satellite track will leave some faint "residue" behind, so you should remove that light frame. If, however, you are using some form of Kappa-Sigma clipping for your stacking mode (recommended), then the pixels along the satellite track will be outliers and removed. Any "residue" should be negligible or non-existent. Run some experiments with both stacking modes and see for yourself. 🙂
Hope that helps.
And APP should take care of this for you automatically in most cases. Under tab 6) INTEGRATE, if you leave "integrate" set to "automatic" it will integrate your lights using either the "median" method (for less than 20 light frames) or the "average" method with "sigma rejection" (for 20+ light frames). Both methods will remove the satellite track (but I suspect the "average" method using "sigma rejection" will be superior). If you hover your mouse over the drop-down boxes in the INTEGRATE panel, you can get more help. Again, experiment with the various options. It's the best way to climb the learning curve. Good luck!
In automatic mode, the "best" algorithm is chosen based on the amount of frames. But, if there is residue, you can try to set the algorithm yourself, like @rhalbers3 mentions, and lower the kappa values to get a stronger rejection.
Having more frames will also help with rejection.
