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So if you are using Tpoint for windows you would look up the offset to true pole and go for being a bit above what tpoint for windows says is perfect?
For Sydney is that about 90 arc secs?
Also with X Y errors when autoguiding do the X errors relate to alt?
I redid my PEC tonight and got quite a similar curve to what I got a few months ago. I then double checked (using the auto button to check it) to check the east west button. It turned out my PEC curve was upside down. Now corrected the PEC is helping not fighting the autoguider and I am getting rounder stars which is a relief.
This mount is so accurate this little fine points make a huge difference. My mount has about 2.3 arc seconds of PE peak to valley. That's pretty phenomenal.
Also do what is the consensus about usong Protrack?
If I had say a 250-300 point model of the whole sky would I expect to see an improvement in tracking if I activated Protrack whilst using PEC and autoguiding?
I have turned it on when I had a 200 point model and it seemed to worsen slightly the guiding.
Greg.
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