GCN Circular 33648
Subject
GRB 230414B: Nickel and KAIT telescope optical observations
Event
Date
2023-04-18T17:53:50Z (3 years ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Sophia Risin, Ivan Altunin, Colin Rushing, WeiKang Zheng and
Alex Filippenko (UC Berkeley) report on behalf of the KAIT GRB team:
We observed the field of GRB 230414B (D'Ai et al., GCN 33612) with
the 1-m Nickel and 0.76-m KAIT telescopes located at Lick observatory,
California. Observations started about 0.57 days after the burst.
A total of 6 images (600s exposure each) in R band were taken with Nickel
telescopes, while KAIT images were taken in clear band, with 60s exposure
and coadded. We clearly detected the optical afterglow
(Pankov et al., GCN 33615; Lu et al., GCN 33616; Raman et al., GCN 33618;
Ghosh et al., GCN 33620; Moskvitin et al., GCN 33622; Malesani et al., GCN
33623; Zhu et al., GCN 33625; Belkin et al., GCN 33628; Fernandez et al.,
GCN 33629; Quadri et al., GCN 33630; Leonini et al., GCN 33634; Ror et al.,
GCN 33636; Querrard et al., GCN 33637; Ruocco, GCN 33641; LaPorte et al.,
GCN 33642) and measure the following magnitude calibrated to the Pan-STARRS1
catalog:
t-t0(days) filter mag err
0.57 clear 19.6 0.1
0.64 R 19.7 0.1
0.72 clear 20.0 0.2