TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1142
SUBJECT: GRB 011030: K-band observations
DATE:    01/11/15 12:27:51 GMT
FROM:    Sylvio Klose at TLS Tautenburg  <klose@tls-tautenburg.de>

S. Klose, B. Stecklum, A. Zeh (Thueringer Landessternwarte Tautenburg),
O. Fischer (Universitaets-Sternwarte Jena), 
U. Thiele (Calar Alto observatory, Spain),
R. Neuhaeuser, N. Huelamo,
   (Max-Planck-Institut fuer Extraterrestrische Physik, Garching),
J. Greiner (AIP Potsdam),
A. Castro-Tirado (LAEFF-INTA, Madrid, and IAA-CSIC, Granada), 
N. Masetti, E. Palazzi (ITeSRE, CNR, Bologna), 
E. Pian (Oss. Astron. Trieste),

report:


The error circle  of the X-ray transient 011030  (Gandolfi et al., GCN
#1118) was  imaged with  the Calar  Alto 3.5-m  telescope on  Oct. 30,
18:32 UT  - 19:33 UT  (i.e., about 12  hours after the  burst trigger)
using  the  near-infrared  camera   Omega  Cass  in  the  polarimetric
mode. The limiting magnitude in  the central part of the K'-band image
(mosaic) is about  K'=19.5 after adding all frames  taken at different
position angles  of the wire-grid polarizer. Since  standard stars are
not yet available we estimate the error of this magnitude limit to +/-
0.5  mag. The combined  image covers  about 90%  of the  revised error
circle (in 't Zand et al., GCN #1123).

At the position of the radio  transient reported by Taylor et al. (GCN
#1136) no source is detected (see also Hammell et al., #GCN 1126).

We do  not detect the  I-band source reported  by Halpern et  al. (GCN
#1139).


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