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On doing this, I get to usually within 30' - rarely has it ever gone over 1°
just to clarify, are you talking here of goto error after 3 star alignment? If you are talking of PA error, how do you measure it?
though I am STILL getting star trails (unguided) if over 30" exposure.
that is actually pretty good unguided. stars will trail on longer exposures due to periodic error in the RA axis, which is going to be maybe 30 arc secs over the worm period of the mount - that will translate into maybe 60 pixels at that long a focal length, depending on your camera. Nothing to do with PA. A few options include a tuneup of the mount and maybe PEC, but the best way to fix this is by guided imaging and you should get OK results if the PA is within a degree. Your signature implies you do guided imaging - what results do you get?
Got that too (in the beta form some time back) I run it, do the adjustments, and really not much different.
again, how do measure how well the Synscan PA routine performs?
Last edited by Shiraz; 27-09-2012 at 03:05 PM.
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