MDM Trouble Report for 2010 Nov 10

Telescope: 2.4m
Observer(s): Haojing Yan (OSU)
Instrument: OSMOS

Problem(s) Encountered:
A couple of my long-exposures failed because of the problem in
guiding. In both cases, it happened when the guide camera FOV 
had two stars of comparable brightness that could be used the guide star. During the middle
of the exposures. The guide camera got confused by these two stars,
and jumped away the centroid of the original guide star, and
began to guide around the center of the two stars!

------------------------------

Submitted on 2010 Nov 10 [7:33:06]