TITLE: GCN CIRCULAR NUMBER: 7105 SUBJECT: GRB 071117: Gemini Observations DATE: 07/11/18 03:42:39 GMT FROM: Josh Bloom at UC Berkeley J. S. Bloom (UC Berkeley), on behalf of the Gemini GRB collaboration, reports: "Imaging observations of the field of GRB 071117 (Ukwatta et al., GCN 7098) were autonomously queued for Gemini South as part of the program GS-2007B-Q-2 (PI = H.-W. Chen). Starting at 2007 Nov 18 00h24m UT, we obtained 5 x 180 sec images in r-band. Within the revised XRT error circle (Guidorzi et al. GCN 7103) we find one source (s1) at position: s1: ra= 22:20:10.63 dec = -63:26:33.7 (J2000) The uncertainty is 350 mas in each coordinate (relative to USNO B1.0). This source, s1, is roughly R=23.3 mag at the time of observation (based upon the USNO B.10 catalog magnitude of the source at 22:20:13.33 -63:26:32.9). There is another source straddling the 90% error circle, embedded in an apparent faint extension to the southeast at: s2: ra= 22:20:10.42 dec = -63:26:35.5 (J2000) Further observations will be required to determine if either of these sources are variable." A finder may be obtained at: http://lyra.berkeley.edu/~jbloom/grb071117-gemini-ep1.ps.gz This message may be cited.