GCN Circular 1580
Subject
GRB 021004, optical observations
Event
Date
2002-10-05T15:21:16Z (23 years ago)
From
Umit Kiziloglu at Middle East Tech.U,Phys.Dept <umk@astroa.physics.metu.edu.tr>
S. Balman (METU), H.Esenoglu (IU), M.Parmaksizoglu (TUG),
Z. Aslan (TUG), U. Kiziloglu (METU)
report on behalf of a larger collaboration (TUG, IKI, KSU):
We have observed the optical transient (OT) of GRB 021004 (GCN #1564,
1565, 1568) with the 1.5m RTT150 telescope of TUG (TUBITAK National
Observatory, Turkey) on Bakirlitepe between 19:30 and 20:30 UT on Oct 4 2002.
We find:
UT start exp_tim band magnitude
19:48:09 900 s R 17.82+-0.03
20:08:25 600 s I 17.18+-0.04
20:20:19 1200 s V 18.19+-0.11
using USNO-A2 magnitude estimates. Analysis of the full data set is underway.
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