GCN Circular 36228

A. Rossi, E. Maiorano, E. Palazzi  (INAF-OAS), M . De Pasquale (Univ. of Messina), report on behalf of the CIBO collaboration:

We observed the field of GRB 240414A (Caputo et al. GCN 36083
Not found
 
 
) simultaneously in the blue and red arms with the g'-, r'-, and z'-bands with the MODS instrument mounted on LBT (Mt Graham, AZ, USA). Observations were obtained at the midtime 05:41 UT on 2024-04-14, 3 hours and 20 minutes after the burst trigger.

We detect the optical transient (Schneider et al., GCN  36084
Not found
 
 
, Aryan et al., GCN  36094
Not found
 
 
, Dutton et al., GCN  36097
Not found
 
 
, Xu et al., GCN  36105
Not found
 
 
, Pankov et al., GCN  36113
Not found
 
 
, Wang et al., GCN 36131
Not found
 
 
) in all bands and we measure a preliminary AB magnitudes r'=19.1+-0.1, calibrated against SDSS field stars, and not corrected for the foreground Galactic extinction.

We acknowledge the excellent support from the LBTO and LBT-INAF staff, particularly A. Cardwell, J. Williams, F. Cusano and D. Paris, in obtaining these observations.