TITLE:   GCN CIRCULAR
NUMBER:  35347
SUBJECT: GRB 231215C: MASTER OT detection
DATE:    23/12/15 11:42:53 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

V.Lipunov, P.Balanutsa (Lomonosov MSU), O.Gress, N.Budnev (ISU),
E.Gorbovskoy, D.Svinkin (Ioffe Institute, Konus-Wind),
Ya.Kechin, K.Zhirkov, A.Kuznetsov, D.Vlasenko, P.Balanutsa, Yu.Tselik, N.Tiurina, I.Gorbunov, V.Vladimirov,D.Zimnukhov, V.Senik, A.Yudin,A.Chasovnikov, D.Cheryasov, A.Sosnovskij (Lomonosov  MSU,SAI,PhysicsDepartment),
O.A. Gres, N.M. Budnev (Irkutsk State University, API),
C.Francile.  F. Podesta, R.Podesta (Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)

MASTER Global robotic net (http://observ.pereplet.ru Lipunov et al.,2010,Advances in Astronomy,2010,30L)
started Swift GRB 231215C ( D'Avanzo et al GCN 35343, Evans et al. GCN35345)
at 2023-12-15 10:33:29UT (Lipunov et al. GCN 35346)

There is MASTER OT J003857.44+573850 since first image with mOT=16.5 at one of first image, with classical GRB light curve
Observations and reduction will be continued