TITLE: GCN CIRCULAR NUMBER: 10757 SUBJECT: GRB 100513A: Faulkes Telescope South observations DATE: 10/05/13 16:15:41 GMT FROM: Cristiano Guidorzi at Ferrara U,Italy C. Guidorzi (U. Ferrara) & A. Gomboc (U. Ljubljana) report on behalf of a large collaboration: On 2010 May 13 at 11:44:17 UT the 2-m Faulkes Telescope South began observing the Swift GRB 100513A (Baumgartner et al., GCN Circ. 10746) using the i' filter, corresponding to 9.6 hr after the burst trigger time. We clearly detect the NIR afterglow (Morgan et al. GCN Circ. 10747, 10749) with the following magnitude: Mid time from Total Exp Filter Magnitude trigger (hr) (s) ------------------------------------------------- 9.89 6x300 i' 21.3 +- 0.2 ------------------------------------------------- Magnitude has been calibrated from nearby SDSS stars.