GCN Circular 22543
Subject
GRB 180325A: Global MASTER-Net OT prompt observations
Date
2018-03-25T15:05:51Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E.Gorbovskoy, N.Tyurina, V.Kornilov, D.Zimnukhov, V.Vladimirov,
A.Krylov, I.Gorbunov, P.Balanutsa, A.Kuznetsov, V.Chazov, D. Kuvshinov
(Lomonosov Moscow State University, SAI),
R.Podesta, C.Lopez, F. Podesta
(Observatorio Astronomico Felix Aguilar (OAFA),National University of San
Juan, Argentina),
H. Levato, C. Saffe
(Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),
San Juan, Argentina),
R. Rebolo, M. Serra-Ricart, G.Israelyan
(The Instituto de Astrofisica de Canarias),
D.Buckley, S. Potter
(South African Astronomical Observatory),
O.Gres, N.M.Budnev
(Irkutsk State University),
A. Tlatov, V.Senik, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory)
V.Yurkov, A.Gabovich, Yu.Sergienko
(Blagoveschensk Educational State University, Blagoveschensk),
MASTER-OAFA and MASTER-IAC automatically pointed to GRB 180314A (Eleonora
Troja et al. GCN 22532) with optical transient detection by MASTER
auto-detection system.
We confirm Swift, LT, NOT, REM, RATIR, SLKT, D50 GROND OT (GCN 22532,
22534, 22535, 22536, 22537, 22538, 22541) but observed before.
MASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in OAFA (Argentina,http://oafa.master.sai.msu.ru:49001/) was
pointed to the GRB180325.08 38 sec after
trigger time at 2018-03-25 01:53:40 UT. On our second
(20s exposure) set robot automaticaly found 1 optical transient within
SWIFT error-box (ra=157.429 dec=24.4389 r=0.05) brighter then 16.7 .
T-Ttrig Date Time Expt. Ra Dec Mag
-------|-------------------|-------|-----------------|---------------|-------
88 2018-03-25 01:54:31 20 ( 10h 29m 42.7s , +24d 27m 49.3s) 16
The 5-sigma upper limit has been about 17.3mag
====================================================================
The observations made on zenit distance = 58 degrees, galaxy latitude b =
59 degree. The moon (55 % bright part) is 25 degrees above the horizon.
The distance between moon and object is 53
The sun altitude is -40.3 degree.
The object can be observed till 2018-03-25 07:53:41 UT.
MASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in IAC (Tenerife, Tejde Observatory) was pointed to the
GRB180325.08 63 sec after trigger time
at 2018-03-25 01:54:09 UT. On our second
(20s exposure) set robot automaticaly found 1 optical transient within
SWIFT error-box (ra=157.429 dec=24.4386 r=0.05) brighter then 17.0.
T-Ttrig Date Time Expt. Ra Dec Mag
-------|-------------------|-------|-----------------|-----------------|-------
119 2018-03-25 01:55:01 20 ( 10h 29m 42.6s , +24d 27m 48.3s) 16.50
The 5-sigma upper limit has been about 17.5 mag
The message may be cited.
====================================================================
The observations made on zenit distance = 34 degrees, galaxy latitude b =
59 degree.
The moon (55 % bright part) is 6 degrees above the horizon. The distance
between moon and object is 53
The sun altitude is -58.3 degree.
The object can be observed till 2018-03-25 06:24:39 with good limit.
This message can be cited.