TITLE: GCN CIRCULAR NUMBER: 12567 SUBJECT: GRB 111117A: Gemini host observation DATE: 11/11/18 05:36:11 GMT FROM: Antonino Cucchiara at LBNL A. Cucchiara (UCSC/UCO Lick) and S. B. Cenko (UC Berkeley) report on behalf of a large collaboration: On November 18.07 UT we observed the field of the short-hard GRB 111117A (Mangano et al., GCN 12559) with the Gemini-South telescope equipped with the GMOS instrument. In our 30 minutes co-added image in r' band we clearly detect the source identified by Andersen et al. and Fong et al.(GCN 12563, 12566): this object appear to be elongated in the SW-NE direction, suggesting it is indeed the host of GRB 111117A. Using several SDSS (DR8) objects in the field we obtain a value of r' = 23.99 +/- 0.11 for this galaxy brightness, consistent with the one reported by the Magellan Telescope. We thank the Gemini-South staff for performing these observations, in particular Pascale Hibon.