TITLE: GCN CIRCULAR NUMBER: 19124 SUBJECT: GRB 160227A: McDonald 0.8m Detection DATE: 16/03/01 01:56:44 GMT FROM: Myungshin Im at Seoul Nat U Myungshin Im, Changsu Choi, Gu Lim (CEOU/SNU), Soomin Jeong (SKKU/IAA-CSIC) on behalf of a larger collaboration We observed the field of GRB 160227A (Palmer et al. GCN19098) using the 0.8m telescope at the McDonald Observatory. The observation started at 2016-02-28 03:03:38 UT, or about 7.5 hours after the BAT alert. We identify the afterglow at the location of the UVOT detection, and our preliminary analysis shows the afterglow at R ~ 20.8 +- 0.15 mag in a stacked image of 21 x 3 min frames. The mid-point of the observation is 2016-02-28 03:47. The photometry is calibrated against a star at RA=194.74877 and Dec=78.68984 (J2000) with R=15.72, taken from APASS catalog. A second epoch data was taken at about 6 hours later, and the analysis of the data is ongoing.