While imaging the other night taking 4 minutes subs on eastern side of the meridian my dithering was moving the mount randomly in RA and DEC as per usual ( PHD2) and the guiding recovered pretty good back to sub arc sec figures , but as soon as I crossed the meridian to the western side , did a manual flip and continued my subs the dithers were huge in DEC and hardly anything in RA ?? and the guiding never fully recovered
Would this have something to with my mount being slightly east heavy
Note: I use BYEOS to send the Dither command and settings didn’t change
Balance is one possibility. Do you calibrate PHD again after the meridian flip? I always do if even I move in a different part of the sky on the same side of the meridian.
I’ve set up a auto calibrate in PHD2 with a bad pixel map and darks
Works perfectly every time , as soon as I connect , start exposures , auto select a star , press guide button I’m guiding in 2 seconds
Before I use to wait forever to calibrate north step , south step , etc... sometimes took 5 minutes to get guiding , sometimes not at all if the guide star was saturated etc..
PHD2 mentions you can use your auto calibration with Ascom pulse guiding for months and months
I might try rebalancing ( move counterweights up the shaft )next time I’m out imaging on the west side
I just checked the PHD2 manual and if your Ascom pulse guiding ( which I am ) PHD2 automatically calibrates after a meridian flip , no need to do anything
Hope they are correct
I still use PHD1. I always calibrate in the area I'm imaging in. I tweak the guiding parameters in the live graph depending on conditions on the night and mount behaviour so pretty much set up everything manually.
I always calibrate in the area I'm imaging in. I tweak the guiding parameters in the live graph depending on conditions on the night and mount behaviour so pretty much set up everything manually.
