TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2717
SUBJECT: XRF 040916, optical follow-up
DATE:    04/09/16 18:39:48 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>

A. de Ugarte Postigo, D. Reverte-Payá, J. Gorosabel,
S. Guziy, M. Jelínek, J. Vílchez 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.
 
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