TITLE:   GCN CIRCULAR
NUMBER:  23816
SUBJECT: GRB 190129B: MASTER Global Robotic Net optical observation
DATE:    19/01/30 12:25:05 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, D.Vlasenko, V.Vladimirov, D.Zimnukhov, 
A.Kuznetsov, P.Balanutsa, A. Chasovnikov, D.Kuvshinov (Lomonosov Moscow State University, SAI, Physics Department),

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

D. Buckley (South African Astronomical Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk Educational State University),

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

O. Gress, N.M. Budnev, O.Ershova, Yu.Ishmuhametov (Applied Physics Institute, Irkutsk State University),

R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA),

H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE)

MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)
was pointed to Konus-Wind GRB190129B  (Hurley et al. GCN23808, Frederiks et al. GCN 23809; Ttrig=2019-01-29 12:15:34.335 UT)
at 2019-01-29 17:21:59UT.
There is no OT at GROND (Bolmer et al. GCN23814) position inside Swift-XRT error-box (LaPorte et al. GCN 23813) RA,Dec=117.46104,+0.93484; +-3arcsec)
with 5-sigma upper limit mlim=20.0 (MASTER unfiltered W=0.2B+0.8R calibrated by USNO-B1 field stars)

Observations started when error-box altitude was 30.95deg.
The sun  altitude  was -33.77 deg.


MASTER-SAAO robotic telescope, located in South  African Astronomical Observatory,
was pointed to GRB190129B at 2019-01-29 19:09:22 UT.
There is no OT inside Swift-XRT error-box and at GROND position with unfiltered mlim=21m (5-sigma upper limit 1080s exp.)

Observations started when error-box altitude was 39.29.
The sun  altitude  was -17.36.


MASTER-Tavrida robotic telescope, located in Lomonosov MSU SAI Crimean astronomical station,
was pointed to GRB190129B at 2019-01-29 2019-01-29 19:11:21UT.
There is no OT inside Swift-XRT error-box and at GROND position with mlim=20.4 (5-sigma upper limit on 1080s exp.)

Observations started when error-box altitude was 40.18
The sun  altitude  was -46.51


MASTER-IAC robotic telescope, located in Teide observatory (Tenerife, Canarias islands, Spain, IAC),
was pointed to GRB190129B at 2019-01-29 20:57:26UT.
There is no OT inside Swift-XRT error-box and at GROND position with mlim=20.3 (5-sigma upper limit on 540s exp.)

Observations started when error-box altitude was 34.38
The sun  altitude  was -29.88.


The message may be cited.