Eq 8 pe

[librarian (Ray)]

After running two attempts at a PE curve, i get the same curve.

Not sure if i should ignore the 2nd worm harmonic at 99sec or the 3rd harmonic at 66sec
in any event it's a big improvement on my previous mount.

Any advise knowledge based opinions appreciated

Ray

[AstroJunk (Jonathan)]

Hi Ray, It would be interesting to see the curves again after running through the ppec routine (which actually gets stored on the mount's driver board) to see what is left over.

I did a quick ppec when the mount arrived and the result has been so good that I've never bothered to go back and do it properly!

[librarian (Ray)]

Yes i agree, as far as i can see, the corrected pe would be in the 3 arc sec range.
i might carry out such a test in due course

have you done any pe recording yourself?

Ray

[AstroJunk (Jonathan)]

I did, and it looked pretty much the same as posted over on Houghy's original thread.

I have Hyperstar set up on my SCT, so to properly refine and measure the PEC I need to take it off so that I can get some decent focal length. I'll have a go once I have nothing better to do, the seeing is great and I can be bothered. Its hard to get those three to align