TITLE:   GCN CIRCULAR
NUMBER:  31593
SUBJECT: ZTF22aaajecp/AT2022cmc: Zeiss-1000 of Koshka observatory optical observations
DATE:    22/02/15 22:23:37 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

N. Pankov (HSE)  A. Pozanenko (IKI),  A. Novichonok (Petrozavodsk State 
University, KIAM),  A. Zhornichenko (KIAM),  S. Belkin (IKI),  report 
on behalf of GRB IKI FuN:

We observed the optical transient of  ZTF22aaajecp/AT2022cmc  (Andreoni 
et al., GCN 31590) with Zeiss-1000 telescope of Koshka observatory 
starting on Feb. 14 (UT) 21:09:47. We clearly detect the transient 
(Andreoni et al., GCN 31590) which is also detected in radio (Perley  et 
al., GCN 31592).

Preliminary photometry of the transient is following

Date       UT start   MJD     Filter Exp.    OT    Err.  UL(3sigma)
                       (mid, days)        (s)

2022-02-14 21:09:47   59621.07347    R      60*76  20.39 0.15  21.5


The photometry is based on the nearby SDSS-DR12 stars
R.A. Dec R(Lupton transformations)
203.7398307 33.1702037 17.794
203.7684775 33.1572431 17.347