TITLE: GCN GRB OBSERVATION REPORT NUMBER: 466 SUBJECT: Lowell/Perkins observation of GRB 991216 DATE: 99/12/17 04:55:02 GMT FROM: John Mattox at Boston U I began observing GRB 991216 at 02:46:09 on 12/17 UT with the 1.8m Perkins Telescope at Lowell Observatory. Will initially cover the region indicated by the RXTE/PCA scan - dRA=0.04 deg, dDEC=0.2 deg (Takeshima, Markwardt, Marshall, Giblin, & Kippen, GCN Notice, 12/16/99) with a series of 5'x5' frames covering this DEC range with 200s exposures and an Rc filter. I am prepared to do UBVRI photometry until 11:00 UT if the optical transient can be localized.