[vsnet-grb-info 5663] GRB 080218B: REM NIR early upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7322
SUBJECT: GRB 080218B: REM NIR early upper limits
DATE:    08/02/19 07:39:08 GMT
FROM:    Stefano Covino at Brera Astronomical Observatory  <stefano.covino at gmail.com>

S. Covino, P. D'Avanzo, L.A. Antonelli, D. Fugazza, L.  Calzoletti,  
S. Campana, G.  Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F.  
D'Alessio, F. Fiore, P. Goldoni, D. Guetta,  C. Guidorzi, G.L.  
Israel, E. Maiorano, N. Masetti, A. Melandri, E.J.A. Meurs, L.  
Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L.  Stella, G.   
Stratta, G. Tagliaferri, G. Tosti, V. Testa, S.D. Vergani,  F. Vitali  
report on behalf of the REM team:

The robotic 60-cm REM telescope located at La Silla (Chile) observed  
automatically the field of the GRB 080218B (Schady et al., GCN 7314).  
A preliminary analysis of the first set of H and K-band exposures  
does not reveal any afterglow candidate inside the refined XRT error  
box (Osborne et al., GCN 7320). The 3sigma upper limits of our images  
are H > 13.7 about 2 minutes after the burst and K > 12.6 about 8  
minutes after the burst (calibrated against the 2MASS catalog).

Further analysis is in progress.