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Well that was very interesting!
With a one point alignment in polar aligned mode, PEMPro consistently advised to move the mount West 5 arc minutes and lower its elevation 2 arc minutes. I've just finished doing this and of course clouds roll in - third night in a row.
At least I was able to let PEMPro run on both Az and Alt and seeing it suggest no more than 0.4 arc minute changes. I would have then liked to track a star for a while - so of course clouds have to pour in!
Two things have left me very surprised in all this:
1. How precise the SS2K's pointing and tracking correction algorithms are in a 3 star alignment - even when I'm near 8 arc minutes off the pole and doing long, long subs!
2. How stunning a lack in Vixen's documentation about how to set the SS2K if you want to drift align! This seems to have been a momumental oversight - especially as many folk on the yahoo SS2K group had no feedback on how to set up the SS2K for drift alignment!
When I have checked everything out I then have to re-build my Tpoint and MaxPoint models - which will raise the question about do I place the SS2K in polar aligned with a 1, 2 or 3 star model? Thoughts anyone? What I really hope to see is if I now try and do a 3 star alignment after the first two stars are locked in hopefully almost no misalignment error when I go to the 3rd star (meaning the SS2K isn't once again trying to operate in Alt Az mode)!
PS
Interesting to note - PEMPro still inverts the direction of the East / West corrections - but it does get the raise lower directions correct!
Cheers all,
Matt
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