Thank you both. Great info Michael, I'll definitely be checking all these areas
Brian: I did go through that document but I also tried a lot of other things so my PHD logfiles are not clean. I will need to redo this
I did some guiding, and I was around 1.0 total RMS and surprisingly DEC was really low (around 0.5) and my understanding of a bad PA is that it would likely show in DEC more than RA.
At some point I may need to look at my guiding equipment. I have 6.45 arc seconds/pixel on the guider as I got a small setup to keep the weight down for the skyguider
I also tried a couple of test subs and I was able to get 5 and 10 min subs with reasonable FWHM and eccentricity (although not hugely better than 180s with my Skyguider, but much longer subs)
I'm sure it is something silly I am doing and not anything wrong with the mount
I'm also going to do the Sharpcap PA twice, with different rotation directions - I am suspecting something was off here but I dont know what as I have been using it for a year on the star tracker
I'll be able to try it tonight or tomorrow and report back
Thanks so much for all the help
