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For stars, field rotation can be accounted for with an equatorial mount aligned with the Earth's axis and turning at the correct rate.

Since the Moon's orbit is on a different axis then the Earth's rotation it seems like the Moon's own motion would also contribute to field rotation with respect to the observer.

Is this correct? For instance, would pictures taken on a properly aligned equatorial mount still appear rotated to each other over time?

How would we find the field rotation due to this?

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    $\begingroup$ Is it really the rotation of the Moon's disk relative to the field of stars that you are asking about, rather than "field rotation"? It's an interesting question, the Moon does quite a dance with rect to it's center as shown here, and the speed and direction of the motion of its center relative to the stars varies as well. $\endgroup$ – uhoh Feb 18 at 22:17
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    $\begingroup$ @uhoh I mean with respect to the observer. For instance, if you photographed the moon with an equatorial mount, would you still see rotated images over some period of time. $\endgroup$ – jeffry7 Feb 18 at 22:22
  • $\begingroup$ If you mean the moon won't be fixed on your frame than yes. $\endgroup$ – Alchimista Feb 19 at 10:28
  • $\begingroup$ Fortunately, long duration exposures of the moon are not required and so the rotation, and drift eastwards, are not a proble in practice. $\endgroup$ – Dr Chuck Feb 19 at 10:56

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