TITLE:   GCN CIRCULAR
NUMBER:  28306
SUBJECT: GRB 200826A: Kitab optical observations
DATE:    20/08/29 10:22:06 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

S. Belkin (IKI), A. Zhornichenko (KIAM), A. Pozanenko (IKI),  N. Pankov 
(HSE), E. Mazaeva  (IKI), A. Volnova (IKI), Sh. Ehgamberdiev (UBAI) 
report on behalf of IKI-GRB-FuN:

We observed the field of a Fermi short GRB 200826A  (Fermi GBM team, GCN 
28284; Kunzweileret al., GCN 28286; Manganal., GCN 28287) with 
Kitab-ISON RC-36  telescope in Clear filter. In particular we cover a 
whole region of IPN  localization (Hurley et al., GCN 28291). The 
optical afterglow ZTF20abwysqy/AT2020scz (Carracedo et al., GCN 28293; 
Ahumada et al., GCN 28295) is not detected. Preliminary photometry of 
the filed is following

Date,      UT start, t-T0,   Exp.,  Filter, OT,    Err.,  UL
                     (mid, days)

2020-08-26  22:22:17 0.76626  3720   CR      n/d    n/d   20.2
2020-08-27  22:08:30 1.73515  5520   CR      n/d    n/d   20.4

The photometry is based on nearby USNO-B1.0 stars, R2 magnitudes
USNO-B1.0_id R2
1238-0009330 16.37
1239-0009591 16.56