Testing polar alignement

To prepare for the clear nights to come, I made use of a brief clearance between clouds to test the polar alignement. I connected the ASI174 to the Esprit f=840mm and let PHD2 guide for 4 minutes. The Polar Alignement stabilized on 4 arc minutes

Is that good enough?

 

And the result of the next night: the PHD2 Guidelog analysed with PECPREP

The PHD2 Guidelog as seen over almost the entire night, 7hours of guiding
The guidelog in more detail, this is another section of the guiding over 2 minutes
The calibration cross of PHD2 seems pretty much ok

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