GCN Circular 27851
Subject
GRB 200524A: SAO RAS optical observations
Date
2020-05-29T09:29:23Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Moskvitin (SAO RAS), A. Pozanenko (IKI), E. Mazaeva
(IKI), A. Volnova (IKI) report on behalf of larger GRB IKI FuN
collaboration:
We observed GRB 200524A (Dirirsa et al., GCN 27797; Pookalil et al.,
GCN 27809; Capalbi et al., GCN 27811; Gupta et al., GCN 27818) with
Zeiss-1.0 m telescope of SAO RAS observatory in Rc-filter. Optical
afterglow discovered by ZTF (Ho et al., GCN 27799) and observed by
several observations (Kumar et al., GCN 27800; Rumyantsev et al., GCN
27802; Sanwal et al., GCN 27803; Perley et al., GCN 27805; Kumar et al.,
GCN 27806; de Ugarte Postigo et al., GCN 27807; Blazek et al., GCN
27810; Ogawa et al., GCN 27813; Izzo, GCN 27817; Belkin et al., GCN
27820; Kuin et al., GCN 27825).
Preliminary photometry is following
Date UT start t-T0 Filter Exp. OT Err. UL (3sigma)
(mid, days) (s)
2020-05-27 21:48:28 3.71143 Rc 2400 22.54 0.20 23.6
2020-05-28 22:17:40 4.73171 Rc 2400 n/d n/d 22.6
The photometry is based on the nearby stars of SDSS DR12 catalog and
Lupton' transformation gri -> R.