GCN Circular 7851

C. Clemens, A. Kupcu Yoldas, J. Greiner, T. Kruehler, A. Yoldas (all MPE 
Garching) and G. Szokoly (Eoetvoes Univ., Budapest and MPE Garching) report 
on behalf of the GROND team:

We observed the field of GRB 080605 for a second time at 02:43 UT on June 7th, 
2008 about 1.12 days after the GRB trigger with 25 mins of effective 
exposures in g'r'i'z'.

We still detect the bright afterglow within the refined 0.5'' Swift-UVOT error 
circle (Kuin et al., GCN #7844) to the following preliminary magnitudes of

r' = 22.3,
i' = 21.7 and
z' = 21.4

with typical errors of +/- 0.1. Given magnitudes are calibrated against 
USNO-B1 field stars and might be affected by the bright, nearby star.

This indicates a clear fading of the optical afterglow compared to our first 
epoch observations (C. Clemens et al., GCN #7834).

Please note, that no correction for the galactic foreground reddening of 
E(B-V) = 0.136 mag (Schlegel et al., 1998) has been applied.