TITLE: GCN CIRCULAR NUMBER: 11122 SUBJECT: GRB 100814A : Liverpool Telescope Observations DATE: 10/08/17 10:52:58 GMT FROM: Zach Cano at ARI/John Moores Liverpool Z. Cano (Liverpool JMU), C. Guidorzi (U.Ferrara) report on behalf of a larger collaboration: We observed the optical afterglow of GRB 100814A (Schaefer et al., GCN 11086; Beardmore et al., GCN 11087) with the 2m Liverpool Telescope, starting at 22:16:09 UT on the 16th of August 2010, in filters r and i. We clearly detect the afterglow in both filters with the following magnitudes: ====================================== Filter T-To (days) Mag -------------------------------------- R 2.96 19.75 +/- 0.02 I 2.93 18.32 +/- 0.04 ====================================== The photometric calibration is performed against USNO-B1 objects 0720-0016107 (R2=19.58) and 0719-0016667 (I=17.27). Our detection is consistent with the values reported by Malesani et al. (GCN 11121). Observations are ongoing.