Polar Alignment
Original comment:
Is it possible to implement the PhotoPolarAlign method that is used in Sharpcap Pro? https://github.com/ThemosTsikas/PhotoPolarAlign
This is now implemented in release 0.9
The best part is that Celestial Pole region need not be visible.
Just a few easy steps:
1. Strap the phone to the mount and lock the Declination axis
2. Rotate around the RA axis while the app collects data
3. Lock the RA axis and align the mount by following directions from the app
With a typical smart-phone camera, the accuracy expected is about 5 arc-minutes. With a 2x add-on lens, the accuracy might be better, in the 1 to 2 arc-minute range.
(I need to verify the precession calculations, so the accuracy might be a little off in this release, but should be good enough for testing)