TITLE: GCN CIRCULAR NUMBER: 22242 SUBJECT: GRB 171205A: JCMT SCUBA-2 sub-mm observations DATE: 17/12/12 03:03:28 GMT FROM: Ian Smith at Rice U I.A. Smith (Rice U.) and N.R. Tanvir (U. of Leicester) report: We are monitoring GRB 171205A (D'Elia et al., GCN Circ. 22177) using the SCUBA-2 sub-millimeter continuum camera on the James Clerk Maxwell Telescope. The source is well detected, as seen at longer wavelengths by NOEMA (de Ugarte Postigo et al., GCN Circ. 22187) and the VLA (Laskar et al., GCN Circ. 22216). At 3.4 days after the burst trigger, the 850 micron flux density was 30.3 +/- 2.4 mJy/beam. We thank Mark Rawlings, William Montgomerie, Giovanni Rosotti, Jim Hoge, and the JCMT staff for the prompt support of these observations that are being taken under project S17BP006.