Well.......last night was a little more like it, but still puzzling. Considering all the problems I have had with guiding, I decided to avoid skunkiture by starting with a simple star cluster....unguided. That went okay, and there was M31 sitting nice and high, so why not? This time I turned on the guiding and wonder of wonders, the guiding was right on the money for more than an hour. Then a funny thing happened on the way to euphoria. Suddenly for no apparent reason the graph dropped 1 1/2 pixels, and then proceeded to track along at that level for the remaining half hour. Very strange. Can't figure it out. The Dec axis does something different every time out. It has got to be something with balance and position. See graphs:
I thought I had the setup balanced.....wrong. 21lbs on the balance bar is not enough to offset the weight of 2 scopes, a finder scope, and 2 cameras.....plus the cords.
Oh yeh.....I forgot to recharge my camera batteries......had to borrow a battery from my ex-wife or it would have been a total bummer.
50 minutes unguided (25 x 2 minutes) @ ISO 800
82 minutes guided (41 x 2 minutes) @ ISO 800
6" imaging Newtonian, Canon 350D, CG5 mount, ST80mm guide scope, Starshoot II color ccd guider
Captured in Nebulosity
aligned and stacked in Deep Sky Stacker
Processed in Photo Shop CS1