TITLE: GCN CIRCULAR NUMBER: 15630 SUBJECT: GRB 131229A: Deep Gemini-South Imaging DATE: 13/12/29 10:22:22 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech), A. Cucchiara (NASA/GSFC), and N. R. Tanvir (U. Leicester) report: We imaged the position of GRB 131229A (Page et al., GCN 15627) using GMOS-S on the Gemini-South 8m telescope in i- an z-bands starting at 07:33:07.5 UT (54 minutes after the GRB). A total of 6 x 180s of imaging was acquired in each filter. Sources detected in the reduced stack inside or close to the (onboard, 5" radius) XRT error circle (with J2000 positions) include: A (05:40:55.85, -04:23:40.6), a point source north of the error circle B (05:40:55.70, -04:23:43.4), an extended source C (05:40:55.92, -04:23:45.9), a faint, marginally detected source No statement about variability or association with the GRB can be made at this time. All of these sources are fainter than the P60 and USNO limits. An image of the field is posted to: http://www.astro.caltech.edu/~dperley/gcn/131229a/131229a_gmos.png