Columbia University Astronomy and 

MDM Observatory GRB Team

GRB 030528: Optical Observations
MDM 1.3m (1.1 x 1.1 arcmin display)

1.3m June 5.28

RA = 17 04 00.31, Dec = -22 37 09.99 (J2000)

GCN Circular #2273: GRB 030528: Optical Observations
N. Mirabal & J. P. Halpern (Columbia U.) report on
behalf of the MDM Observatory GRB follow-up team:

"We obtained I-band images on the MDM 1.3m for 1.5 hours
on June 5.28, covering the positions of most of the Chandra
X-ray sources listed by Butler et al. (GCN 2269) .

We detect optical counterparts of three of the four
sources within the revised SXC region reported by Villasenor
et al. (GCN 2261) .  The source CXOU J170400.3-223710,
tentatively proposed as the GRB afterglow by Greiner et al. 
(GCN 2271), is not detected in any of our images to a preliminary
limiting magnitude I > 21.5.  Comparison with prior observations
and deeper optical images of this location would be useful."

This message may be cited.

Jules Halpern
Nestor Mirabal

Columbia University and MDM Observatory

MDM Observatory