GCN Circular 38068
Subject
LIGO/Virgo/KAGRA S241102br: OHP/T193 optical observations
Date
2024-11-03T21:49:21Z (a month ago)
From
Christophe Adami at LAM <christophe.adami@lam.fr>
Via
Web form
C. Adami (LAM), B. Schneider (MIT) report on behalf of a larger collaboration:
We observed the field of LIGO/Virgo/KAGRA S241102br and in particular the two possible
OTs pointed by Balanutsa et al. (GCN 38057) using the T193cm telescope at Observatoire
de Haute-Provence (France) equipped with the MISTRAL spectro-imager.
We obtained 3x10 min exposures in the r-band for each of the two MASTER sources
(MASTER OT J230458.26+422347.1 and MASTER OT J225647.76+411630.3) from 2024-11-03
19:15 UT to 2024-11-03 20:14 UT.
No new sources are detected in these two fields at a limiting magnitude of
r > 22.60 AB for MASTER OT J230458.26+422347.1 and r > 22.10 AB for MASTER OT
J225647.76+411630.3.
The photometric calibration was performed using nearby objects from the PanSTARRS
catalog and the magnitudes are not corrected for Galactic extinction.
We acknowledge the excellent support from Observatoire de Haute-Provence, in
particular Stephane Favard.