2012-02-19 (2012A-0056): 7 hrs used, 2.5 hrs lost (Weather), 
1.5 hrs lost (Telescope control problem)

Comment: Guider and Guider Drifter have problems. Zero pointed scope 
at start of night, and images said scope pointing OK, but guide stars 
often unseen in guider. Had to restart guider several times to get 
sensitivity up to seeing a V~9 guide star. Got nasty msgs from the 
Guider Drifter, and finally had to use the TCS Drifter open loop. 
Had to log out and log back in again about a half dozen times, killing 
over an hour. When starting up after a login, windows pop up in VDU 
window instead of main screen. This happened previous night as well, 
but weather was the main factor there. Much more successful this 
evening, despite two major power failures that left us in the dark, 
and required starting computer systems from scratch.