MDM Trouble Report for 2010 Oct 30 Telescope: 1.3m Observer(s): Mogren and Grier (Ohio State University) Instrument: CCDS Problem(s) Encountered: At the beginning of the night, we noticed a mysterious dark splotch located at the center of the CCDS slit. It kinda looks like a hairball. We moved our objects to a different part of the slit, so we didn't lose any observing time. This problem actually appeared in our data for the first time sometime during the night of Oct. 29. ------------------------------ Submitted on 2010 Oct 31 [5:38:51]