TITLE: GCN CIRCULAR NUMBER: 25350 SUBJECT: LIGO/Virgo S190814bv: no counterpart candidates in Swope imaging DATE: 19/08/15 21:09:07 GMT FROM: Charles Kilpatrick at UC Santa Cruz C. D. Kilpatrick, D. A. Coulter, J. S. Brown, G. Dimitriadis, R. J. Foley, C. Rojas-Bravo, M. R. Siebert, K. Siellez (UCSC), A. L. Piro (Carnegie), A. Rest (STScI), Natalie Ulloa (Universidad de La Serena), M. Drout (University of Toronto) report on behalf of the One-Meter Two Hemisphere (1M2H) collaboration: in the process of following up the localization region of LIGO/Virgo collaboration (LVC) event S190814bv (GCN #25324), we observed the following fields with the 1.0-m Swope telescope at Las Campanas Observatory, Chile on UT 2019 August 15. We covered approximately 42.1% of the probability region from the LALinference map provided by the LVC in GCN #25333. The Swope Direct 4k x 4k imager covers 29.8 arcmin x 29.7 arcmin. All images were 2 minute r-band exposures. For each image, the approximate pointing center and 3-sigma limiting magnitude are indicated. Using the photpipe image reduction and subtraction pipeline (Rest et al. 2005, ApJ, 634, 1103), we compared our images to publicly available DECam r-band images of the same fields. We did not detect any new transients in these images. Field RA Dec MJD Limiting Magnitude s047243 00:49:28.13 -25:46:43.7 58710.22978 20.4 s047244 00:51:40.99 -25:47:16.8 58710.23631 21.0 s047897 00:47:02.64 -25:17:41.6 58710.24059 20.9 s038397 01:35:18.38 -32:43:43.7 58710.24462 21.0 s046590 00:49:38.62 -26:16:34.0 58710.24954 20.8 s038395 01:30:36.48 -32:43:46.9 58710.26314 19.9 s046591 00:51:50.90 -26:16:30.4 58710.26905 19.8 s037786 01:31:03.31 -33:13:26.4 58710.27448 19.7 s051884 00:43:53.16 -22:18:36.4 58710.28009 19.7 s039006 01:27:41.83 -32:14:13.6 58710.28429 20.1 s050547 00:50:37.25 -23:17:55.0 58710.28807 19.6 s047241 00:45:06.91 -25:47:25.4 58710.29461 20.6 s038396 01:32:58.15 -32:43:38.3 58710.29737 20.0 s038394 01:28:15.17 -32:43:40.1 58710.30383 19.8 s045940 00:49:53.81 -26:46:48.4 58710.31389 20.3 s039625 01:34:14.54 -31:44:16.4 58710.31954 20.3 s046592 00:54:03.50 -26:17:03.5 58710.32758 20.3 s049881 00:50:51.60 -23:48:09.0 58710.33806 17.6 s039007 01:30:01.97 -32:14:17.2 58710.34484 18.9 s039623 01:29:35.64 -31:44:06.7 58710.34875 19.5 s049883 00:55:09.22 -23:47:24.0 58710.35221 19.0 s047896 00:44:53.88 -25:17:20.0 58710.35535 18.9 s050543 00:41:59.93 -23:18:22.0 58710.36199 19.8 s051883 00:41:44.54 -22:18:59.0 58710.36544 20.6 s049880 00:48:39.94 -23:48:07.2 58710.37390 19.9 s047901 00:55:50.47 -25:17:21.8 58710.37663 19.0 s040862 01:23:59.14 -30:44:52.4 58710.38109 19.7 s037787 01:33:26.71 -33:13:12.7 58710.38419 20.5 s040240 01:24:31.44 -31:13:48.7 58710.38748 20.7 s051885 00:46:00.48 -22:18:24.1 58710.39168 19.8 s051217 00:52:36.22 -22:48:37.8 58710.39462 20.0 s048553 00:42:30.31 -24:46:55.2 58710.39748 19.6 s047242 00:47:17.16 -25:47:08.5 58710.40022 19.5 s050549 00:54:53.54 -23:18:23.8 58710.40316 20.6 s037788 01:35:45.82 -33:13:21.7 58710.40647 19.7 s052557 00:43:40.08 -21:49:19.6 58710.40962 19.6 s046589 00:47:25.87 -26:16:54.1 58710.41251 19.5 s045941 00:52:02.76 -26:47:29.0 58710.41605 21.5 s047895 00:42:41.18 -25:17:03.5 58710.41941 20.0 s038393 01:25:53.35 -32:43:38.3 58710.42301 21.1 s038392 01:23:31.13 -32:43:27.8 58710.42620 20.6 s050546 00:48:25.37 -23:18:02.9 58710.43197 20.3 s048552 00:40:17.18 -24:47:48.5 58710.43449 19.9 s049878 00:44:19.54 -23:47:55.0 58710.43701 19.8 s040243 01:31:26.30 -31:14:22.9 58710.43999 20.4 s046594 00:58:25.85 -26:16:35.0 58710.44370 20.1 Please direct all communication related to this circular to Charlie Kilpatrick (cdkilpat@ucsc.edu).