GCN Circular 2717
A. de Ugarte Postigo, D. Reverte-Pay�, J. Gorosabel, S. Guziy, M. Jel�nek, J. V�lchez and A. J. Castro-Tirado (IAA-CSIC, Granada), report: We have taken R-band frames covering the error box for the long-lasting XRF 040916 detected by HETE-2 (Yamazaki et al., GCN Circ. 2712; Yamamoto et al. GCN Circ. 2713). A set of five images (300-s exposure time each) was taken at the 2.5m INT (+WFC) on La Palma during the time interval 16 Sep (02:50 UT - 04:06 UT, i.e. 2.87-4.05 hr after the burst). No new or strongly variable object is found in the entire error box down to R = 21, when comparing with the DSS-2 red. This message can be quoted.