GCN Circular 332
Subject
GRB 990510: optical observations
Date
1999-05-18T22:10:54Z (25 years ago)
From
Gabriele Ghisellini at Obs.Astro. di Brera <gabriele@merate.mi.astro.it>
G. Marconi and G.L. Israel (Observ. of Rome, Italy), D. Lazzati, S. Covino
and G. Ghisellini (Observ. of Brera, Milan, Italy) report:
A 40 min exposure taken at ESO-NTT-SUSI2 1999, May 17.1066, with a
seeing of 1.2" shows the OT of GRB990510 at the magnitude R=23.4+-0.1
(assuming R=16.5 for the USNO star at RA = 13:38:00.82, DEC=-80:29:11.7).
A 50 min exposure taken on May 18.1306 (1" seeing) shows the OT at
R=23.7+\-0.1.
No obvious candidate host galaxy can be seen.
The NTT images are posted at:
http://www.merate.mi.astro.it/~gabriele/990510/
This message is citeable.