GCN Circular 33190
Subject
GRB 230116D: KGO RC-25 optical observations
Date
2023-01-17T20:01:46Z (a year ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI, HSE), A. V. Samokhvalov (citizen scientist, Surgut),
A. Pozanenko (IKI), N. Pankov (HSE, IKI) report on behalf of GRB IKI FuN:
We observed the optical afterglow (Zhu et al., GCN 33177; Nazarov et
al., GCN 33178; Moskvitin et al. GCNs 33179, 33187; Swain et al., GCN
33182; Belkin et al., GCN 33189) of GRB 230116D (Sonbas et al., GCN
33176) with 25cm 1/8 Ritchey-Chretien telescope of KGO observatory.
Observation started on 2023-01-16 (UT) 21:21:41. The series consist of
images with an exposure of 600 s in R-filter. Preliminary photometry of
the stacked image is following
Date UT-start Exptime Filter t-T0 OT Err UL
2023-01-16 23:36:12 11*600 R 0.16075 20.25 0.20 20.4
Ref.stars
USNO-B1.0
RA DEC R2
06:34:04.9708800 +49:53:05.863200 15.61
06:34:38.7820800 +49:49:22.972800 16.29
06:34:57.9967200 +49:53:01.932000 16.94
06:34:24.5268000 +49:47:49.801200 15.68