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  <ggwilli@gmail.com>

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