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Old 12-04-2018, 07:21 PM
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codemonkey (Lee)
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Join Date: Jul 2013
Location: Kilcoy, QLD
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Mostly looks like seeing to me based off the fact that Ra and Dec are pretty close on most of the graphs.

Could be worth disabling Dec guide output to see how it fluctuates. Given that Dec isn't tracking like Ra is, barring any cable snags and assuming a good calibration, all you should see is drift due to polar misalignment and seeing. If it's bouncing around a lot, with guide output disabled you can be pretty confident it's seeing. I think the guide assistant will give you a good idea of this too.

As a side note, have you definitely got the right focal length / pixel size set up in PHD? I note the imaging scale seems oddly close to 1"/px. If you're using the 174 (?) with 1.7m FL that should be 0.71"/px
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