TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5203 SUBJECT: GRB060602A: optical observations(/transient?) DATE: 06/06/03 02:31:33 GMT FROM: Brian Lindgren Jensen at U.of Copenhagen Brian L. Jensen, Jens Hjorth, Johan Fynbo (Dark Cosmology Centre, NBI), Jyri Näränen (University of Helsinki) report: "We have observed the field of GRB060602A (Schady et al., GCN 5196) in the R-band with the NOT+ALFOSC (La Palma), starting at June 2.908 (15 min. after the burst). All R:6x300s cover the full 3' radius BAT error circle. Visual comparison to the SDSS (Cool et al., GCN 5197), does not reveal any new bright sources in the field. However, a faint source, not readily apparent on SDSS (r-band), is observed at: RA = 09:58:16.73 Dec = +00:18:12.7 - located 1.2' from the centre of the BAT error-circle. A preliminary calibration to SDSS photometry of the field (Cool et al., GCN 5197) yields a magnitude for the source of R~22.5+-0.3. Further observations are needed in order to determine whether the source is transient. A finding chart is available at: http://www.astro.ku.dk/~brian_j/grb/grb060602.897/ "