GCN Circular 2741
D.B. Fox (Caltech) reports on behalf of a larger collaboration: "Further analysis of our Robotic P60 observations of the candidate optical afterglow of GRB040924 (GCNs 2734, 2735) reveals that the candidate afterglow fades by 0.87 +/- 0.08 mag from our first exposure (mean epoch 12:07:57 UT) to our last exposure (mean epoch 12:42:09 UT). Referenced to the time of the burst this corresponds to a decay with power-law index alpha approximately equal to -0.7. The coordinates of the candidate referenced to the GSC-2.2 are: RA 02:06:22.55, Dec +16:06:48.8 (J2000) with coordinate uncertainties of approximately 0.2". Photometric calibration of the data against the F-emulsion magnitudes of the GSC-2.2 yields an R-band magnitude of the candidate at our first epoch (945 sec after the burst) of R=18.0 mag. Images and a finding chart for the candidate may be found at: <http://www.astro.caltech.edu/~derekfox/grb040924/>."