#15438 May 28, 2003
Well, I got out again last night and there were a few scattered
clouds, so I thought I'd take the opportunity to try to get my
tracking down. I had loosened the gear 1 notch from the tightest I
had it without binding. I started tracking with the C11 and it was
looking OK, but not great. I realized I didn't shift the weight
east, so I moved my 10# weight about 2-3 inches to the east (I had a
10# and 20# to balance my C11) which is a little more than I had
normally done. I sat there and waited for the spikes to happen and,
gues what....they never did. I was getting great tracking,
averaging .6-1 arcsec average error with 3 second exposures on the
STV. I'm not sure if the looser gear or the greater eastward weight
shift did it, but I am now quite pleased. I tried PEC training
(after clearing the previous data) and it had a property where for
3/4 of the period it would be great and the other 1/4 horrible. Oh
well, the most important thing is the smooth tracking.
I decided to give M63 a go at f10 ( 1 arcsec/pixel) and got the
result at the top of my SXV-H9 page:
I wouldn't normally image at this resolution, but it was a great test!
If anyone has the magic decoder ring for PEC, I'd like to hear it.
I'll keep trying...it's not too difficult when guiding anyway.