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GCN Circular 15762

Subject
GRB 140129A: RATIR Optical and NIR Observations
Date
2014-01-29T04:49:03Z (10 years ago)
From
Antonino Cucchiara at NASA/GSFC <antonino.cucchiara@nasa.gov>
A. Cucchiara (NASA-GSFC), 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), 
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 began observing the field of GRB 140129A (Melandri, et al., GCN 15760) 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 at 2014/01 29.15 (12.6 minutes after the BAT trigger).

For a source within the Swift-XRT error circle, in comparison with the SDSS 
DR9 and 2MASS, we obtain the following detections:

Filter    mag(T0+0.12.6 minutes)	mag(12.6 to 44.4 minutes)     
  r	  18.05 +/- 0.01		18.80 +/- 0.01
  i	  17.85 +/- 0.02		18.67 +/- 0.02
  Z	  17.72 +/- 0.03		18.50 +/- 0.03
  Y	  17.82 +/- 0.04		18.33 +/- 0.03
  J	  17.65 +/- 0.05		18.35 +/- 0.04
  H	  17.68 +/- 0.07		18.19 +/- 0.05

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

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