For some reason, I've been having lots of trouble polar aligning my Az-GTi mount with the All Sky Polar Alignment (ASPA). I'm using the old white ASIAir version, coupled to a Sky Watcher AZ-GTi mount in EQ mode through an EQDirect cable. I've never had trouble polar aligning with the ASPA feature in the ASIAir app, since I don't have a clear view of the south pole (Recife, Brazil). However, ever since the ASIAir app updated to the 2.0 version, I never managed to achieve accurate polar alignment again, although I'm not sure this has to do with the update. I'll describe the problem below.
After a normal ASPA routine, while in the "polar alignment correction screen", the error keeps accumulating by itself each time I press Refresh, at a somewhat constant rate, say, 3' per Refresh every 5 sec. For instance, if I just let the mount alone and wait a couple of minutes, the error sum reaches up 2-3°. The curious thing though is that if I just restart the ASPA routine, the error returns to the same initial values, and starts increasing again at each refresh I press. It's almost like the mount is not tracking while the ASPA is being executed, though I can confirm that the mount is indeed tracking since I can clearly hear the tracking noise inside the Az-GTi mount (i.e., the app can sucessfully start the sideral tracking AND the mount is tracking).
I experimented using my mount in Alt/Az mode with the SynScan App, just to see if it can still track, and it can. I also tried turning the tracking Off and used the normal non-ASPA routine. Also tried to run the mount with different batteries, power source, and the ASIAir through Wi-Fi. No luck... Don't know what to do anymore 🙁