Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 21994

GRB 171011A: MASTER-SAAO optical observations
2017-10-11T19:12:29Z (7 years ago)
Vladimir Lipunov at Moscow State U/Krylov Obs <>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, D.Kuvshinov, A.V.Krylov,
I.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University, Sternberg Astronomical Institut of MSU

D.Buckley, S. Potter, A.Kniazev, M.Kotze
South African Astronomical Observatory

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

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

O.Gres, K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk,
Irkutsk State University

V.Yurkov, Yu.Sergienko
Blagoveschensk Educational State University, Blagoveschensk

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

MASTER II  robotic telescope (MASTER-Net: 
located in SAAO was pointed to the  GRB171011A 34 sec after notice time 
and 273 sec after trigger time at 2017-10-11 18:37:20 UT. On our first 
(50s exposure)  set we  not found  optical transient within SWIFT 
error-box  (ra=236.758 dec=-10.0703 r=0.1) brighter then 17.7.

The observations made on zenit distance = 80 degrees, galaxy latitude b = 
33 degree.
The moon (59 % bright part) below the horizon (The altitude of the Moon is 
-51 degree ).
The sun  altitude  is -23.4 degree.
The error box can be observed till sunrise at 2017-10-12 03:59:47.

This message can be cited.
Looking for U.S. government information and services? Visit