[vsnet-grb-info 3471] GRB060526: optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5306
SUBJECT: GRB060526: optical observations
DATE:    06/07/13 14:05:29 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

V.Rumyantsev (CrAO),  A.Pozanenko (IKI), M.Ibrahimov, I.Asfandyarov (MAO) on
behalf of larger GRB follow up collaboration report:

We observed the afterglow  of GRB060526 (Campana et al. GCN5162) in Maidanak
Astronomical Observatory (MAO) with 1.5 m telescope in R and B-passbands on
May 26-31, and June 1-2.  Additinnaly we recalibrated observation  with CrAO
Shajn 2.6m telescope (Rumyantsev et al. GCN5181). A photometry is based on
the star USNO B1.0 RA=15 31 18.60   DEC=+00 17 35.00   R2=16.35 B2=16.42
already used in GCNs (Khamitov  GCN5173, Morgan GCN5175,  Kann GCN5172,
Baliyan GCN5185).  R-band photometry of the afterglow and upper limits  are
following:

 Mid_time (UT), Telescope,  R_mag

26.7778  MAO1.5 17.98 +/- 0.01
26.7829  MAO1.5 18.06 +/- 0.01
26.7883  MAO1.5 18.11 +/- 0.01
27.7799  CrAO2.6 20.38 +/- 0.07
27.8143  CrAO2.6 20.47 +/- 0.06
27.8233  MAO1.5  20.43 +/- 0.04
28.8014  MAO1.5  21.31 +/- 0.13
29.8053  MAO1.5  22.06 +/- 0.11
30.8049  MAO1.5  22.84 +/- 0.24
31.7938  MAO1.5  23.52 +/- 0.32
01.8318  MAO1.5  >23.6
02.8648  MAO1.5  >23.8

The afterglow is clearly detected in B-filter up to May 29;  B-photometry
is underway.

The message may be cited.