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GCN Circular 20234

Subject
GRB 161202A: RATIR Optical and NIR Observations
Date
2016-12-04T17:03:08Z (7 years ago)
From
Eleonora Troja at GSFC <eleonora.troja@nasa.gov>
Eleonora Troja (GSFC), Nat Butler (ASU), Alan M. Watson (UNAM),
Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer
(UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB),
Antonino Cucchiara (UVI), 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), Harvey Moseley
(GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD)
report:

We observed the field of GRB 161202A (Sbarufatti, et al., GCN 20227;
Vianello & Longo, GCN 20229) 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 2016/12 4.08 to 2016/12 4.31 UTC (26.70 to 32.11 hours after
the BAT trigger), obtaining a total of 3.34 hours exposure in the r and i
bands and 1.45 hours exposure in the Z, Y, J, and H bands.

For a source within the Swift-XRT error circle (Burrows, et al., GCN 20231)
in comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following
upper limits (3-sigma):

   r    > 24.0
   i    > 23.9
   Z    > 23.1
   Y    > 22.8
   J    > 22.4
   H    > 22.0

These magnitudes are in the AB system and are 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.
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