TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5072 SUBJECT: GRB 060502B MDM Follow-up Observation DATE: 06/05/04 11:22:23 GMT FROM: Jules Halpern at Columbia U. J. P. Halpern (Columbia U.) and N. Mirabal (U. Michigan) report: "Following our initial report in GCN 5066, we continued observing the XRT location of Swift short GRB 060502B (Troja et al., GCNs 5055,5063) in the R band on the MDM 1.3m telescope on May 3 and 4 UT. In a summed 75 minute exposure centered at May 3 09:02 UT, we clearly detect the faint galaxy candidate "G1" seen in the Gemini North image of Berger et al. (GCN 5064) that was taken about 1.5 hours later. Observing on the following night, a summed 105 minute exposure centered at May 4 08:56 UT again shows "G1" at about the same magnitude. We measure R~23.9 for this object, somewhat brighter than Berger et al. (GCN 5064). MDM images of this field are posted at http://www.astro.columbia.edu/~jules/grb/060502b/ This message may be cited."