TITLE: GCN GRB OBSERVATION REPORT NUMBER: 465 SUBJECT: GRB 991216 Optical Observation DATE: 99/12/17 04:39:08 GMT FROM: Jin Zhu at Beijing Obs GRB 991216 Optical Observation J. Zhu, on behalf of the Beijing Astronomical Observatory GRB team, report: "A combined field of about 1.8 degrees in radius centered at the BACODINE_FINAL_POSITION of GRB991216 (also given in GCN #463) was observed with the BAO 60/90 cm Schmidt telescope starting from about 1 hour after the GRB event. For the observed 12 fields of each in f.o.v. of 58' X 58', 3 150-s exposures were taken in different epoch. The limiting magnitude for combined images is expected to be fainter than R=20, and will be checked when I arrive the observation site this evening. However, even for the quite large coverage, it's a pity that the later RXTE_PCA_POSITION of the GRB was out of the observed area. We are planning to observe the RXTE_PCA_POSITION tonight with one 58' X 58' fields in much longer exposure time from about Dec. 17.5 UT. Any comments and suggestions are welcomed to zj@bac.pku.edu.cn (with a copy to zhu_jin@263.net for urgent message). This report may be cited." -- ======================================================================== Jin Zhu | Tel.: +86-10-62759888, 62756612 (O) Beijing Astronomical Observatory | +86-10-62579689 (H) Chinese Academy of Sciences | +86-314-5054767 (Schmidt dome) P. R. China | Fax : +86-10-62765031 or 64888731 ------------------------------------------------------------------------ email: zj@bac.pku.edu.cn or jinzhu@sun.ihep.ac.cn WWW Home Page: http://vega.bac.pku.edu.cn/~zj Pager: zhu_jin@263.net (only Sub. line) OR +86-10-64256688 PIN 82333 ========================================================================