TITLE: GCN CIRCULAR NUMBER: 19290 SUBJECT: GRB 160410A: UKIRT near-IR upper limits DATE: 16/04/11 17:24:13 GMT FROM: Wen-fai Fong at U of Arizona W. Fong and P. Milne (University of Arizona) report: "We observed the field of the short-duration GRB 160410A (Gibson et al., GCN 19271) with the Wide Field Camera (WFCAM) mounted on the 3.8-m United Kingdom Infrared Telescope (UKIRT) on Mauna Kea beginning on 2016 Apr 11.215 UT (25.3 hr post-burst). We obtained observations in the J- and K-bands in 0.7" seeing. Using the quick-look pipeline ORAC-DR, we do not detect any near-IR source in or around the positions of the X-ray (Beardmore et al., GCN 19273) or optical (Yates et al., GCN 19272; Selsing et al., GCN 19274; Marshall et al., GCN 19275; Trotter et al., GCN 19277) afterglows. Calibrated to 2MASS, we therefore place 3-sigma limits of J(AB)>20.0 mag and K(AB)>19.5 mag on the near-IR afterglow of GRB 160410A at 25.3 hr post-burst. We note that this analysis is preliminary and a final reduction of the images are expected to be ~1.5 mag deeper. We thank Sam Benigni for executing these observations. In addition, we thank Watson Varricatt, Tom Kerr, and Richard Green for their assistance in re-establishing a system for a target-of-opportunity program at UKIRT."