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Originally Posted by JohnG
Interesting, I am asuming that you have taken a number of Darks the same length as your light exposures, a similar number of Bias on your shortest exposure. Sounds like you may have missed a step somewhere.
Your DEC backlash is large although I would have thought that you could manually import a number of seconds to calibrate, with the G-11 I have to set my backlash compensation at 12 seconds to get the mount to move the required 9 pixels, it is nothing unusual to have this setting up around 20 - 25 seconds. Is there a way to adjust the Aggressiveness, on the ST-4, I have this set at 3-5 depending on the seeing.
And, yes, good alignment helps, if you want, send me a PM with your email address and I will send you a PDF file with Southern Hemishere Drift Aligning explained.
JohnG
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I think I must have missed a step in processing, not sure how I could have done it as I used the auto image set processing option as normal...
17s is not excessive DEC backlash? Really? I was freaking out about this as this is at full siderial rate, does that put it in context? Should I just accept this then.
I'm going to work on drift alignment tonight (it the wx gods play nice) using the LPI....
Thanks for the feedback....