Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 774

GRB000812, TNG R-band observations
2000-08-17T17:28:25Z (24 years ago)
Nicola Masetti at ITeSRE,CNR,Bologna <>
N. Masetti, E. Palazzi (ITESRE, CNR, Bologna), E. Pian (OATs, Trieste), 
R. Cosentino, F. Ghinassi, A. Magazzu', S. Benetti, (TNG), on behalf 
of a larger collaboration, report:

"We acquired optical R-band images of the central part of the GRB000812
error box (Hurley et al., GCN #770) on 2000 August 16.961 UT with
TNG+Dolores for a total exposure time of 30 minutes. Seeing was 1.1 arcsec.
The pointing was centered on the uncatalogued radio source found by Frail
et al. (GCN #771).
The observations were heavily hampered by the full moon and by a 8th
magnitude star located ~40 arcsec from the radio position; nevertheless,
they were considerably deeper than the DSS-II.

Photometric calibration was performed using USNO-A2.0 catalog stars.
No new object brighter than the DSS-II limit is apparent all over the
image. Also, no object down to a 3-sigma limiting magnitude R ~ 23 
is present inside the radio source error box.".

This message can be cited.
Looking for U.S. government information and services? Visit