TITLE: GCN CIRCULAR NUMBER: 9370 SUBJECT: GRB 090515: MMT/MMIRS NIR Upper Limit DATE: 09/05/15 22:59:17 GMT FROM: Grant Williams at Steward Observatory B. McLeod (CfA), G. Williams (MMTO) on behalf of the MMIRS commissioning team report: We observed the field of GRB 090515 (Beardmore et al. 2009, GCN 9356) with the MMIRS instrument on the 6.5-m MMT telescope.  Observations began at 06:44 UT, approximately 119 minutes after the Swift trigger. We obtained 27 x 30 second exposures in the K-band.  We do not detect any afterglow candidate in the XRT error circle in the combined image to the following 5-sigma limiting magnitude determined using nearby 2MASS stars: t_start (UT)     exp t (s)     t_start-t_0     Limit ----------------------------------------------------------- 06:44        27x30              119 min      K > 19.3