TITLE:   GCN CIRCULAR
NUMBER:  36060
SUBJECT: EP240408A: MASTER optical observations
DATE:    24/04/10 11:59:24 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

G.Antipov, V.Lipunov, P.Balanutsa (Lomonosov MSU), D.Buckley (SAAO), K.Zhirkov, A.Kuznetsov,
N.Tiurina, E.Gorbovskoy, Ya.Kechin, D.Vlasenko, Yu.Tselik,I.Gorbunov,
V.Vladimirov,D.Zimnukhov, V.Senik, A.Yudin,A.Chasovnikov, D.Cheryasov(Lomonosov MSU,SAI,PhysicsDepartment),
O.Gress,N.Budnev(ISU),
A.Sosnovskij (Crimean Astrophysical Observatory, RAS),
C.Francile.  F. Podesta, R.Podesta (Observatorio Astronomico Felix AguilarOAFA),
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  EP 240408A (Hu et al. #GCN 36053, Triggertime= 2024-04-08 17:56:30UT,
Notice=2024-04-09T10:31:03, Center R.A.,Dec. = 158.851 -35.747)
optical (unfiltered) observation by MASTER-SAAO robotic telescope, located in South Africa, at 2024-04-09 17:08:35UT .

There is no optical transient with mlim=19.5(unfiltered) at Swift XRT ( #GCN 36057
158.851 deg, DEC = -35.747          (10:35:24.24 -35:44:49.20) )
and at GROND positions (Rau et al. GCN 36059 10:35:22.44 -35:44:08.2)
~23h after trigger time

Observation started at 55deg altitude. Sun altitude was 11 deg.
Reduction will be continued.