Hi Everyone, I'm trying to give autoguiding a chance with the hope of improving my astrophotos, however I've been having several issues and haven't been able to get a decent photo yet. I'm realizing that poor/defective guiding is worse than no guiding at all! Anyways, my setup is a Skywatcher reflector 150/750 on EQ3 dual axis motors using PicGoto, and using a meade 6x50 (200 mm focal lenght) finderscope paired with a xbox live vision webcam for autoguiding with PHD2. I know this isn't the best setup but it's the one I can afford at this time... Anyways, after reading several helpful threads in this forum and the PHD2 guides and help files, I still haven't been able to narrow down what my particular problems are. Basically one of the main problems I have is that the guiding in DEC will periodically go crazy and lose the star and take forever to "bring it back". I suspect large DEC backlash could be a problem. I nearly always calibrate before imaging a particular object, and most of the times I'll get a large DEC backlash warning when calibration completes. Other times the warning will be about RA rates being lower than DEC rates. Sometimes, just sometimes, I won't get a warning message but still my guiding will be quite bad. At the best times the guiding error will be about 1.7" but soon enough I'll get a large jump either on DEC or sometimes even in RA. At other times, guiding will be quite good in DEC but the error on RA will be twice as large as in DEC, resulting in elongated stars. Anyways, like I said, every night (or even on different objects on the same night) it'll be a different thing. I'm attaching my logs from last night with the hope that someone might give me a clue as to what my problems might be? I also tried setting off my polar alignment a little bit so stars drift north and enable south guiding only, that seemed to work at first but then not really... All these problems result on my light frames being either elongated, or jagged, or with L shaped stars, even in 30 or 60" subs.
Anyways, if anyone can lend a hand I'll be really grateful.