For these calculations, the telescope wind shake power spectrum has an assumed form.

Since the telescope is on a heavy mounting, it is relatively immune from vibration or wind shake.

Residual jitter can arises from uncorrected atmospheric turbulence as well as telescope wind shake.

Dave Andersen Technical overview Atmospheric turbulence generated near the ground (plus wind shake and telescope vibration) will negatively impact the delivered image quality.

It didn't seem to be about to shift, so I took a few pics through the scope, although my tripod isn't the best and wind shake was a bit of a problem; - must upgrade it soon.