TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3413
SUBJECT: GRB050509B: Optical/Infared observations
DATE:    05/05/11 17:39:30 GMT
FROM:    Angelo Antonelli at Obs. Astro. di Roma  <a.antonelli@mporzio.astro.it>

S. Covino, G.L. Israel, L.A. Antonelli, D. Malesani, A. Melandri, N.
Masetti, G. Tagliaferri, on behalf of the MISTICI and CIBO
collaborations report


"On May 11, we observed the revised error circle of SWIFT-XRT (GCN
3395) of the short GRB 050509B<fixed> </fixed>(Hurkett et al. GCN
3381) with DOLORES at the TNG (La Palma) and with=A0 FORS2 and NACO at
the VLT (Chile). We collected R band photometry with FORS2 (a total of
45 minutes of exposure with ~0.8 seeing), R band photometry with
DOLORES ( a total of 3600 s with ~1.5" seeing) and H band photometry
with NACO (a total of 1800 s with ~0.7" seeing).


 All sources mentioned in GCN 3401 (Bradley et al.) and GCN 3410
(Hjorth et al.) are detected with no clear sign of variability.
Further observations in the nexts days are planned."

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