GCN Circular 9808
Subject
GRB 090814B: I-band observations from 1.23m CAHA telescope
Date
2009-08-14T17:50:52Z (15 years ago)
From
Javier Gorosabel at IAA-CSIC <jgu@iaa.es>
J. Gorosabel (IAA-CSIC), A. de Ugarte Postigo (INAF-OAB), V. Terron
(IAA-CSIC), M. Fernandez (IAA-CSIC), S. Guziy (IAA-CSIC), S. Castillo
(Univ. Malaga), M. Jelinek (IAA-CSIC), P. Kubanek (IAA-CSIC & IPL Univ.
Valencia), A.J. Castro-Tirado (IAA-CSIC), report;
We carried out I-band observations of the INTEGRAL GRB 090814B (Beckmann
et al. GCN 9795) with the 1.23m Calar Alto telescope as follows;
---------------------------------------------------------
Date Time since GRB Exp. Lim.
Start - End Start - End Time Mag.
(UT) (Sec) (Sec) (3 sigma)
---------------------------------------------------------
14.0606 - 14.0739 342 - 1492 5 x 180 19.8
14.0745 - 14.0865 1544 - 2583 3 x 300 19.8
14.0871 - 14.0963 2635 - 3430 2 x 360 20.0
14.0973 - 14.1912 3518 - 11631 10 x 700 20.3
---------------------------------------------------------
No optical object is detected in the XRT position determined by Swift
(Evans et al. GCN 9803) for the upper limits given above. The combination
of all the images sets an upper limit of I = 20.6 with a total exposure
time of 9520s and a mean observing epoch of Aug 14.1259 UT.