TITLE:   GCN CIRCULAR
NUMBER:  18901
SUBJECT: GRB 160119A: RATIR Optical and NIR Observations
DATE:    16/01/19 16:20:11 GMT
FROM:    Antonino Cucchiara at NASA/GSFC  <antonino.cucchiara@nasa.gov>

Antonino Cucchiara (GSFC/STScI),Nat Butler (ASU), Alan M. Watson (UNAM), 
Alexander Kutyrev (GSFC),William H. Lee (UNAM), Michael G. Richer (UNAM), 
Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), 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), Harvey Moseley (GSFC), 
John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD) report:

We observed the field of GRB 160119A (Marshall, et al., GCN 18893) 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 2016/01 19.36 to 2016/01 19.54 UTC (5.61 to 9.76 hours after 
the BAT trigger), obtaining a total of 3.20 hours exposure in the r, i, and z bands. 

We identified the source reported by Malesani et al., GCN 18895. 
In comparison with the SDSS DR9 and 2MASS catalogs, we obtain the 
following detections and upper limits (3-sigma): 

 r   23.78 +/- 0.28 
 i   23.26 +/- 0.17 
 z   > 20.78 

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.