TITLE: GCN CIRCULAR NUMBER: 24300 SUBJECT: LIGO/Virgo S190426c: RATIR Optical and NIR Observations of Galaxies DATE: 19/04/27 20:04:02 GMT FROM: Alan M Watson at UNAM Eleonora Troja (GSFC/UMD), Rosa L. Becerra (UNAM), Nat Butler (ASU), Alan M. Watson (UNAM), Simone Dichiara (UMD), Diego Gonz��lez (UNAM), Alexander Kutyrev (GSFC/UMD), William H. Lee (UNAM), Margarita Pereyra (UNAM), and Tanner Wolfram (ASU) report: We observed 22 galaxies selected from the NED/CLU list for LIGO/Virgo S190426c (Chatterjee et al, GCN Circ. 24237) 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 on the night of 2019-04-27 UTC. For each galaxy, we typically obtained 720 seconds of exposure in g and i filters and 540 seconds of exposure in Y and H filters. Typical 10-sigma limiting magnitudes are i = 21.2. Our observations are listed below. Visual inspection reveals no obvious counterpart candidates. We thank the staff of the Observatorio Astron��mico Nacional in San Pedro M��rtir. Start (UTC) RA and Dec (J2000) Galaxy 2019-04-27 03:30 166.8817 +00.7831 IC 0671 2019-04-27 04:10 167.0731 -05.1323 MCG -01-29-002 2019-04-27 04:27 169.4779 -01.9464 IC 0680 2019-04-27 04:43 166.6895 -04.0722 2MASX J11064547-0404202 2019-04-27 05:10 166.3304 -03.9763 LCRS B110246.5-034222 2019-04-27 05:26 168.2716 +00.0030 2MASX J11130517+0000108 2019-04-27 05:43 170.8150 -05.5724 LCRS B112043.2-051740 2019-04-27 06:01 170.1643 -05.6714 MCG -01-29-010 NED01 2019-04-27 06:27 170.7156 -02.9109 CGCG 011-082 2019-04-27 07:19 168.0636 -05.7535 MCG -01-29-005 2019-04-27 07:50 169.4203 -04.4609 2MFGC 08820 2019-04-27 08:09 163.6089 +07.1427 CGCG 038-046 2019-04-27 08:27 300.5817 +43.1268 2MASX J20021959+4307366 2019-04-27 08:45 308.2331 +54.5088 UGC 11592 2019-04-27 09:12 311.7825 +57.5936 4C +57.35 2019-04-27 09:31 305.9863 +25.7011 2MASX J20235668+2542038 2019-04-27 09:52 302.6869 +17.7386 2MASX J20104485+1744189 2019-04-27 10:24 305.5413 +24.9932 2MASX J20220989+2459351 2019-04-27 10:42 300.6474 +14.9513 2MASX J20023539+1457045 2019-04-27 11:00 301.1253 +19.4085 2MASX J20043008+1924304 2019-04-27 11:16 299.3077 +19.0874 2MASX J19571383+1905142 2019-04-27 11:41 289.0384 -00.7858 2MFGC 14839 -- Dr. Alan M. Watson Instituto de Astronom��a Universidad Nacional Aut��noma de M��xico