TITLE:   GCN CIRCULAR
NUMBER:  14642
SUBJECT: GRB 130513A: RATIR Optical and NIR Observations
DATE:    13/05/14 18:05:39 GMT
FROM:    Alan M. Watson at Instituto de Astronomia UNAM  <alan@astro.unam.mx>

Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC),
William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB),
Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino
Cucchiara (UCSC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico
Ramirez-Ruiz (UCSC), Jos� A. de Diego (UNAM), Leonid Georgiev (UNAM),
Jes�s Gonz�lez (UNAM), Carlos Rom�n-Z��iga (UNAM), Neil Gehrels (GSFC),
and Harvey Moseley (GSFC) report:

We observed the field of GRB 130513A (Mereghetti, et al., GCN Circular
14630) with the Reionization and Transients Infrared Camera (RATIR;
www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio
Astron�mico Nacional on Sierra San Pedro M�rtir from 2013/05 14.15 to
2013/05 14.16 UTC (19.97 to 20.30 hours after the BAT trigger),
obtaining a total of 0.18 hours exposure in the r' and i' bands and 0.07
hours exposure in the Z, Y, J, and H bands.

For a source within the Swift-XRT error circle (Evans & Marshall, GCN
Circular 14635), in comparison with USNO-B1 and 2MASS, we obtain the
following upper limits (3-sigma):

 r'	> 22.64
 i'	> 22.65
 Z	> 21.34
 Y	> 20.65
 J	> 20.26
 H	> 19.71

These magnitudes are in the AB system and not corrected for Galactic
extinction in the direction of the GRB.

We thank the staff of the Observatorio Astron�mico Nacional in San Pedro 
M�rtir.