MDM Trouble Report for 2012 Feb 17

Telescope: 1.3m
Observer(s): De Rosa and Fiorenza (OSU and CUNY GC)
Instrument: CCDS

Problem(s) Encountered:
While observing NGC3227 (UT 09:20, RA 10 23 30
DEC +19 51 54) the target moved within the slit even if the guiding
was properly working. It moved both in the E-W and N-S direction of 
few arcseconds. We have had the  mirror not open nor closed  error but
continued observing as suggested. 

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Submitted on 2012 Feb 18 [6:53:51]