TITLE:   GCN CIRCULAR
NUMBER:  31846
SUBJECT: ZTF22aaajecp/AT2022cmc: continued optical observations (Mondy, SAO RAS, CrAO)
DATE:    22/04/07 15:18:20 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

N. Pankov (HSE),  A. Pozanenko (IKI), E. Klunko (ISTP), A. Moskvitin 
(SAO RAS), O. A. Maslennikova (SAO RAS), V. Rumyantsev (CrAO), S. Belkin 
(IKI, HSE)  report on behalf of GRB IKI FuN:

We continue to observe the optical transient ZTF22aaajecp/AT2022cmc 
(Andreoni et al., GCN 31590) with AZT-33 telescope of Mondy
observatory, Zeiss-1000 telescope of SAO RAS, ZTSh telescope of CrAO. We 
detect the transient (Andreoni et al., GCN 31590; Kumar et al., GCN 
31597; Pankov et al., GCNs 31593, 31625, 31652, 31798; Perley, GCN 
31594; Lipunov et al., GCN 31600; Kann et al., GCN 31626; Yao et al., 
GCN 31641; Freeburn et al., GCN 31647; Smith et al., GCN 31654; Dobie et 
al., GCN 31665; Sfaradi  et al., GCN 31667; Cenko et al., GCN 31729; 
Dimple et al., GCN 31805) at the redshift of z=1.193
(Tanvir  et al., GCN 31602; Lundquist et al., GCN 31612).

Preliminary photometry of the transient observed in Mondy observatory on
April, 5 and 6, 2022 is following

Date       UT start   MJD     Filter Exp.    OT    Err.  UL(3sigma)
                        (mid, days)    (s)
2022-04-05 17:40:24   59674.7572 R    30*120 21.08 0.09  22.8
2022-04-06 20:13:03   59675.8563 R    20*120 21.35 0.11  22.8


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

The light curve of ZTF22aaajecp/AT2022cmc can be found at
http://grb.rssi.ru/AT2022cmc/AT_2022cmc_LC_MJD.png