I am experiencing an offset error between Sky Safari 6 Pro on a Samsung Galaxy Tab S2 tablet and the Nexus DSC digital setting circles.
The Sky Safari bullseye is consistently offset about 0.3° in both RA and DEC from the Nexus DSC position.
That is, if I center an object using Sky Safari, its position will be off about 0.3° in both RA and DEC in the Nexus DSC.
I have synchronized the time and epoch settings between Sky Safari and the Nexus DSC.
What else could be causing this offset error?
Thanks for any help or suggestions!