Photo: Qhy9 mono + qhy 5x2" filter wheel and Baader 2" LRGB, Ha, O3 and S2 filters , Meade DSI Pro 2 as guider, TS 9mm off-axis guider Binoculars: Nikon Action 12x50 Telescopes: Skywatcher Evostar 120ED f7.5 APO + TS 2" flattener Mounts: HEQ5 Pro Eyepieces: Nagler 11mm type6, Pentax XW 7mm, Televue 2X barlow 1.25"
Quote:Probably an alignment issue. Set up, get your polar align off a bit, and a bunch of cone error. So, the hc calculates where object _should_ be, slews to the 'before taking up backlash' position and prepares to add in the cone error while taking up backlash, realizes it's on the wrong side of the meridian, slews to the other side. Depending on the order of events inside the firmware, this can turn into a 'lather rinse repeat' exercise until the object moves away from the meridian by more than your alignment / cone errors.I've seen a similar sort of thing, on something within a half degree of the meridian. Slew in from one side, then change it's mind and slew in the other way. Sad part, I was going to a bright star to sync, and then the slew to my actual target, well, back across the meridian again. I learned my lesson, always pick a sync star on the same side of meridian as the target.