More ‘dithered’ observations of the Moon. VE1 filter images kept being ‘bias frames’. How does the shutter know that the VE1 filter is in? Or is something else going on?

Pointing with absolute coordinates is awkward – from night to night the mount calibration seems to go slightly off so that new offsets have to be tested in a time-consuming manner. If the polar axis alignment is not good, would it cause this problem?

CCD seemed to show new startling ‘saturation’ modes.