GCN Circular 17448
D. Kawamura, T. Sakamoto, A. Yoshida (AGU) We observed the field of GRB 150211A detected by Swift (trigger #630714; Starling et al., GCN Circ. 17434) with the iTelescope.Net (http://www.itelescope.net) T11 (0.50 m Plane Wave) telescope located at the New Mexico Skies Observatory (NM, USA). 20 images of 60 sec exposures were taken in the R filter starting from February 11 12:06:11 (UT) about 14.3 minutes after the trigger and stopped on February 11 12:32:17 (UT). We do not detect the optical afterglow both in the individual images and the stacked image at the enhanced X-ray afterglow position (Starling et al., GCN Circ. 17442). The estimated five sigma upper limit of the combined image (total exposure of 1200 sec) is ~19.1 using the USNO-B1 catalog.