TITLE: GCN CIRCULAR NUMBER: 24238 SUBJECT: LIGO/Virgo S190425z: RATIR Observations of Galaxies DATE: 19/04/26 16:47:01 GMT FROM: Alan M Watson at UNAM Nat Butler (ASU), Alan M. Watson (UNAM), Eleonora Troja (GSFC/UMD), Rosa L. Becerra (UNAM), Simone Dichiara (UMD), Diego González (UNAM), Alexander Kutyrev (GSFC/UMD), William H. Lee (UNAM), Margarita Pereyra (UNAM), and Tanner Wolfram (ASU) report: We observed 23 galaxies selected from the NED/CLU list 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 on the night of 2019-04-26 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. Our observations are listed below. Analysis is proceeding. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir. Start (UTC) RA and Dec (J2000) Galaxy 2019-04-26 03:41 182.76301 +25.51679 2MASX J12110307+2530599 2019-04-26 04:01 188.30713 +27.58410 IC 3494 2019-04-26 04:17 182.16379 +25.12808 2MASX J12083929+2507410 2019-04-26 04:48 179.33521 +22.16242 KUG 1154+224 2019-04-26 05:06 180.72538 +21.64475 KUG 1200+219 2019-04-26 05:25 184.50847 +26.08058 2MASX J12180207+2604500 2019-04-26 05:43 183.01570 +25.11901 2MASX J12120382+2507083 2019-04-26 06:09 184.80208 +25.71502 IC 3146 2019-04-26 06:32 189.61375 +28.48008 2MASX J12382707+2828478 2019-04-26 06:52 180.98436 +22.98009 KUG 1201+232 2019-04-26 07:24 185.66534 +27.74699 IC 3230 2019-04-26 07:42 182.72627 +25.25279 2MASX J12105427+2515102 2019-04-26 08:03 181.75129 +22.38786 2MASX J12070031+2223161 2019-04-26 08:22 187.85341 +26.79614 IC 3450 2019-04-26 08:51 184.48819 +25.07652 IC 3116 2019-04-26 09:08 185.95186 +27.74630 KUG 1221+280 2019-04-26 09:25 184.27696 +27.19256 2MASX J12170644+2711335 2019-04-26 09:45 185.92750 +26.84897 2MASX J12234260+2650561 2019-04-26 10:11 184.87139 +25.89869 2MFGC9705 2019-04-26 10:30 190.76567 +30.38206 UGC 07891 NED01 2019-04-26 10:49 241.37454 +24.20486 2MASX J16052994+2412169 2019-04-26 11:08 241.33534 +23.48742 2MASX J16052050+2329146 2019-04-26 11:40 242.83681 +22.47378 2MASX J16112110+2228253