TITLE:   GCN CIRCULAR
NUMBER:  12342
SUBJECT: GRB 110915A: 1.23m CAHA I-band observations
DATE:    11/09/15 22:54:19 GMT
FROM:    Javier Gorosabel at IAA-CSIC  <jgu@iaa.es>

R. Sanchez-Ramirez (IAA-CSIC), N. Morales (IAA-CSIC), J. Gorosabel (IAA-CSIC), J.L. Ortiz (IAA-CSIC), P. Kubanek (U. Valencia & IAA-CSIC), A. de Ugarte Postigo (DARK/NBI), A.J. Castro-Tirado (IAA-CSIC), report on behalf of a larger collaboration:

"We imaged the field of the Swift GRB 110915A (Holland et al., GCN Circ 12335) with the 1.23m Calar Alto telescope. The observations were carried out in the I-band on Sep 15.7984-15.8500 UT (starting 5.81 hours after the GRB) with a total exposure time of 25 X 180 = 4500s.  No object brighter than I=21.5 is detected in the XRT error circle (Evans et al., GCN Circ 12340)."