GCN Circular 2697
Subject
GRB040903, REM near-IR observation
Date
2004-09-07T12:51:21Z (20 years ago)
From
Vincenzo Testa at INAF/Astro. Obs. of Rome <testa@mporzio.astro.it>
V. Testa (INAF-OAR), S. Covino (INAF-OAB), L.A.Antonelli (INAF-OAR),
F.M.Zerbi (INAF-OAB), G. Chincarini(Univ. Milano Bicocca, INAF-OAB)
on behalf of the REM/ROSS team report
The robotic telescope REM observed the field of GRB040903 (IBAS #alert 1972,
Gotz et al., GCN 2690) with the IR camera REMIR in the filter H starting on
Sept. 03 at UT 22:58, 4.67 hrs after the first INTEGRAL alert.
Due to the poor weather conditions only one set of five 1s dithered images,
for a total exposure time of 5s, was acquired. The acquisition and image
preprocessing were done automatically. The photometry was calibrated with
a subset of the 2MASS catalog.
Off-line analysis revealed no evident new sources, compared to the 2MASS
catalog, within the error circle of INTEGRAL.
The detection upper limit (3 sigma) is H=15.2 and the extinction in the area
is A_H=2.56.
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