TITLE: GCN CIRCULAR NUMBER: 15436 SUBJECT: GRB 131030A: Continued RATIR Optical and NIR Observations DATE: 13/11/01 19:26:33 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), 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 (ORAU/GSFC), Eleonora Troja (GSFC), 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 again observed the field of GRB 131030A (Troja, et al., GCN 15402) 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 2013/11 1.08 to 2013/11 1.20 UTC (29.01 to 31.91 hours after the BAT trigger), obtaining a total of 2.13 hours exposure in the r and i bands and 0.88 hours exposure in the Z, Y, J, and H bands. We continue to detect the uncatalogued source reported by UVOT (Troja et al., GCN Circ. 15414), at fainter magnitudes than the first epoch of RATIR observations (Littlejohns et al., GCN Circ. 15420). In comparison with the SDSS DR9 and 2MASS, we obtain the following detections: r 20.73 +/- 0.03 i 20.45 +/- 0.03 Z 20.19 +/- 0.05 Y 20.06 +/- 0.07 J 20.07 +/- 0.08 H 19.57 +/- 0.11 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison with the first epoch of RATIR observations these magnitudes can be modelled with power-law decays, with indices of approximately t^-1.1 for the r and i bands, t^-1.0 for the Z, Y and J bands and t^-0.8 for the H band. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.