GCN Circular 25351

J. Swift, Y. Yin (Thacher School Observatory), C. D. Kilpatrick, J. S. Brown, D. A. Coulter, G. Dimitriadis, R. J. Foley, C. Rojas-Bravo, M. R. Siebert, K. Siellez (UCSC)

report on behalf of the One-Meter Two Hemisphere (1M2H) collaboration:

in the process of following up galaxies in the localization region of LIGO/Virgo collaboration event S190814bv (GCN #25324) provided in the updated map of GCN #25333, we observed the following fields with the 0.7-m Thacher telescope at the Thacher School Observatory on UT 2019 August 15.  Each field represents a 3 minute r-band image.  The approximate center of each image is noted in the table below, and the field of view is a 21 arcmin x 21 arcmin rectangle.  We also note the approximate 3-sigma limiting magnitude of each pointing.

Comparing our images to PS1 r-band images of the same fields, we did not detect any transient sources.

Field    RA           Dec          MJD             Limiting Magnitude
t100590  00:46:22.72  -24:24:13.7  58710.46465     19.3
t111134  00:36:17.38  -20:34:58.4  58710.45696     19.3
t106304  00:39:41.83  -22:18:48.6  58710.45951     19.4
t108232  00:42:30.94  -21:37:16.0  58710.46209     19.3
t102488  00:49:11.40  -23:41:53.2  58710.46721     19.2
t104397  00:53:26.90  -23:00:19.8  58710.46976     19.2
t099651  00:54:10.94  -24:44:11.0  58710.47230     19.1
t102491  00:53:44.16  -23:41:53.5  58710.50424     19.3
t105354  00:53:20.71  -22:39:33.8  58710.50678     19.1
t103442  00:52:06.82  -23:21:06.1  58710.50934     19.1

Please direct all communication related to this circular to Charlie Kilpatrick (cdkilpat@ucsc.edu).