[vsnet-grb-info 15456] Fermi TRIGGER_NUM 430645968: MASTER OT inside error box

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16745
SUBJECT: Fermi TRIGGER_NUM 430645968: MASTER OT inside error box
DATE:    14/08/26 10:44:45 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

N.Tyurina, E. Gorbovskoy, V. Lipunov, M.Pruzhinskaya, 
V.Kornilov, D.Kuvshinov, P.Balanutsa,  A.Kuznetsov, V.V.Chazov,
D.Denisenko, Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University

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


V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov, A. Gabovich
Blagoveschensk Educational State University, Blagoveschensk


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

V.Krushinski, I.Zalozhnih,  A. Popov
Ural Federal University, Kourovka

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)


MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) 
located in Tunka was starting survey on the FERMI  GRB140825.33 error-box 
(ra=22 51 21 dec=+31 05 24 r=2.660000)  19218 sec after notice time and 
23046 sec after trigger time at 2014-08-25 14:16:52 UT. The 5-sigma upper 
limit on our first (180s exposure)  set is about 18.73mag

MASTER II  robotic telescope 
located in Kislovodsk was starting survey on the FERMI  GRB140825.33 
error-box (ra=22 51 21 dec=+31 05 24 r=2.660000)  29715 sec after notice 
time and 33543 sec after trigger time at 2014-08-25 17:11:49 UT. The 
5-sigma upper limit on our first (180s exposure)  set is about 18.86mag

MASTER-Tunka auto-detection system discovered 
MASTER OT J230448.20+324534.1 at
(RA, Dec) = 23h 04m 48.20s +32d 45m 34.1s on 2014-08-25.62245 UT.
The OT unfiltered magnitude is 18.6m (limit 19.9m).

The OT is seen in 2 images. There is no minor planet at this place.
THere is SDSS9 J230447.99+324540.9 galaxy (Rmag = 22) with 7.3 arcsec 
offset.

We have reference image without OT on 2013-08-30.62251 UT with unfiltered 
magnitude limit 19.9m.

Spectral observations are required.

The discovery 
and reference images are available at:
http://master.sai.msu.ru/static/OT/230448.20+324534.1.png

The coverage map and OT  position are available at 
http://master.sai.msu.ru/static/GRB140825.png

The message may be cited.