TITLE: GCN CIRCULAR NUMBER: 16970 SUBJECT: GRB 141026A: Continued RATIR Optical and NIR Observations DATE: 14/10/28 17:48:18 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 141026A (Hagen, et al., GCN 16950) 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 2014/10 28.13 to 2014/10 28.19 UTC (48.58 to 49.84 hours after the BAT trigger), obtaining a total of 1.07 hours exposure in the r, i and z bands. For a source within the Swift-XRT error circle, we obtain the following upper limits (3-sigma): r > 23.54 i > 23.31 z > 19.82 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison to previous epochs of RATIR observations (Butler, et al., GCN 16965; Littlejohns, et al., GCN 16962), the GRB has continued to fade. The r band upper limit indicates a power-law decay between this and the previous epoch of RATIR observations with a minimum approximate index of t^(-0.9). This is steeper than that reported in Butler, et al. (GCN 16965). We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.