GCN Circular 7520

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

We observed the field of GRB 080325 (Swift trigger 307604; L. Vetere et al., 
GCN #7512) simultaneously in g', r', i', z', J, H and K with GROND (Greiner 
et al. 2008, PASP) mounted at the 2.2m ESO/MPI telescope at La Silla 
Observatory (Chile).

Observations started at 09:50 UT on March 25th, 2008, about 5.7 hrs after the 
GRB trigger. We obtained 20 mins of total integration time in J, H and K 
during morning twilight.

We do not detect any new source within the 2.6'' enhanced Swift-XRT error 
circle reported by J. Osborne et al. (GCN #7513) to the following 3-sigma 
upper limits:

J > 20.4, H > 19.4 and K > 19.0.

We also detect the afterglow candidate, about 6" south of the centre of the 
enhanced Swift-XRT error circle, reported by A. Updike et al. (GCN #7515) to 
following magnitude:

J = 18.60 +/- 0.06,

calibrated against 2MASS catalogue stars.