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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2152 SUBJECT: GRB030418: Upper limits from recent and historical observations. DATE: 03/04/18 18:30:37 GMT FROM: Michael Wood-Vasey at UC Berkeley/LBNL/SNfactory <wmwood-vasey@lbl.gov> W. M. Wood-Vasey, Lawrence Berkeley National Laboratory, using images obtained by R. Bambery, S. Pravdo, M. Hicks, and K. Lawrence (Near-Earth Asteroid Tracking project, Jet Propulsion Laboratory), reports historical upper limits for the optical transient for GRB 030418 of Price et. al (GCN #2148) from images taken with the Haleakala MSSS 1.2-m and Palomar Oschin 1.2-m telescopes from 2001 Apr 19 -- 2003 Mar 28. A co-addition of these images (Haleakala: 2001 Apr 19, May 7, 2002 Jan 8, Jan 14, Feb 4; Palomar: 2002 Feb 7, Feb 17, Mar 9, Apr 8, Apr 19, May 11, 2003 Mar 28) shows nothing at this location to a combined limiting magnitude of 22.81 (S/N = 3). The co-addition is available at: http://supernova.lbl.gov/~wwoodvas/GRB/#GRB030418 This message may be cited. All dates UT.
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