TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4405 SUBJECT: GRB 051227: MDM Observation DATE: 05/12/28 05:39:41 GMT FROM: Jules Halpern at Columbia U. J. P. Halpern & S. Tyagi (Columbia U.) report on behalf of the MDM Observatory GRB follow-up team: "We are observing the Swift XRT position (Beardmore et al., GCN 4402) of GRB 051227 in the SDSS r filter with RETROCAM on the MDM 2.4m, a medium-sized telescope on Kitt Peak, Arizona. Beginning on Dec. 28 03:55 UT, or 9.9 hours after the burst, our first 15 minutes of exposure yields no detection to a limit R > 23, referenced to the SDSS photometry in the field (Cool et al., GCN 4399)."