Аннотация:https://gcn.gsfc.nasa.gov/gcn3/23476.gcn3
MASTER-Kislovodsk robotic telescope (MASTER-Net:
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy,
vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station
of Pulkovo observatory) was pointed to the GRB181201A (Mereghetti et
al., GCN #23469) ~13.3 hours after trigger time at 2018-12-01 15:57:35 UT.
On our first (180s exposure) set we found optical transient detected
by MASTER-OAFA (Podesta et al, GCN 23470; Gorbovskoy et al., Atel
#12255; also observed by Kong GCN #23475;).
T-Tmid Date Time Expt. Ra Dec Mag
---------|---------------------|-------|-----------------|-----------------|-------
47915s 2018-12-01 15:57:35 180 (21h 17m 11.11s , -12d 37m 50.9s) 17.6
The 5-sigma upper limit has been about 18.3 mag
The galactic latitude b = -39 deg., longitude l = 39 deg.
The observations made on zenit distance = 64 deg.The moon (32 % bright
part) below the horizon (The altitude of the Moon is -41 deg. ).
The sun altitude is -25.6 deg.
The object can be observed till sunrise at 2018-12-02 04:21:42 UT.
The message may be cited.