GCN Circular 16212
T. Sakamoto, D. Kawamura, A. Yoshida (AGU) We observed the field of GRB 140430A detected by Swift (trigger #597722; Siegel et al., GCN Circ. 16190) with the iTelescope.Net (http://www.itelescope.net) T16 (15 cm Takahashi TOA-150) telescope located at the AstroCamp Observatory (Nerpio, Spain). Due to the elevation constraint, we were able to collect only 4 images of 60 sec exposures in the R filter starting from April 30 20:46:42 (UT) about 13 minutes after the trigger and stopped on April 30 20:52:42 (UT). We do not detect the optical afterglow both in the individual images and the stacked image at the reported optical afterglow position (Siegel et al., GCN Circ. 16190; Malesani et al., GCN Circ. 16193). The estimated five sigma upper limit of the combined image (total exposure of 240 sec) is ~18.6 using the USNO-B1 catalog.