TITLE:   GCN CIRCULAR
NUMBER:  14822
SUBJECT: GRB 130606B: RATIR Optical and NIR Observations 
DATE:    13/06/08 02:46:15 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), José A. de Diego (UNAM), Leonid Georgiev (UNAM),
Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC),
and Harvey Moseley (GSFC) report:

We observed the field of GRB 130606B (Vianello et al., GCN Circular
14795) with the Reionization and Transients Infrared Camera (RATIR;
www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio
Astronómico Nacional on Sierra San Pedro Mártir from 2013/06 7.16 to
2013/06 7.25 UTC (15.97 to 18.08 hours after the BAT trigger), obtaining
a total of 0.36 hours exposure in the r' and i' bands and 0.30 hours
exposure in the Y and H bands.

For a source within the XRT error circle (Kennea et al., GCN Circular
14820), in comparison with USNO-B1 and 2MASS, we obtain the following
3-sigma upper limits:

r'    > 23.59
i'    > 23.61
Y     > 21.52
H     > 20.73

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

No further observations are planned.

We thank the staff of the Observatorio Astronómico Nacional in San Pedro 
Mártir.