GCN Circular 14559
Subject
GRB 130504A: Bassano Bresciano Observatory optical upper limit
Date
2013-05-04T17:23:59Z (11 years ago)
From
Ulisse Quadri at Bassano Bresciano Obs <oabb@ulisse.bs.it>
U.Quadri, L.Strabla, R.Girelli and A.Quadri report:
We imaged the field of GRB 130504A detected
by SWIFT(trigger 555096) with the robotic
telescopes of (IAU station 565) Bassano Bresciano
Observatory, Italy.
The observations started automatically 2 min 42 sec after the
GRB trigger, with our schmidt telescope D=400 mm F/D=3
and our Newton telescope D=250mm F/D=5.5.
Weather conditions were good.
We co-added 2 series of 10 unfiltered CCD exposures of 120s each.
We did not found any optical counterpart in the error box of
the XRTcandidate (Cummings et al. GCN 14551) and in error box of
X-ray afterglow candidate (P. D'Avanzo (INAF-OAB), A. Melandri (INAF-OAB)
et al. GCN 14553) at our following limiting magnitude:
.
Start End Vlim
2.7min 52min 18.0
Magnitudes were estimated with the USNO-B1 cat.
and are not corrected for galactic dust extinction.
The message may be cited.