TITLE: GCN GRB OBSERVATION REPORT NUMBER: 147 SUBJECT: GRB980703, Host galaxy multicolor photometry DATE: 98/07/28 12:43:21 GMT FROM: Vladimir Sokolov at SAO RAS On 1998 July 25.01 UT we obtained B (480 sec), V (420 sec), Rc (300 sec) and Ic (360 sec) band images of the proposed host galaxy of GRB980703 (GCN #137, 139) with the 6-m BTA telescope of SAO-RAS. We reliably detected an extended object - the GRB host galaxy - in all 4 bands. Conditions were photometric with seeing of 1.15 arcsec. Photometric calibration were performed using Landolt's star PG2336+004 and PG2331+055. Photometry of the GRB980703 host galaxy on 4 arcsec diameter aperture gave: B = 23.04+/-0.09 V = 23.02+/-0.10 Rc= 22.43+/-0.08 Ic= 22.10+/-0.18 As already reported (GCN #137), the host galaxy is blue. Images and broadband spectrum of will be posted at http://www.sao.ru/~zhar/home/GRB/980703.html This message can be cited. V. Sokolov (SAO RAS), S. Zharikov (SAO RAS), I. Panthenko (SAI) and the SAX GRB team