TITLE: GCN GRB OBSERVATION REPORT NUMBER: 938 SUBJECT: GRB010214 Optical Observation DATE: 01/02/15 15:25:56 GMT FROM: Jin Zhu at BAO GRB010214 Optical Observation J. Zhu, S. J. Xue, on behalf of the Beijing Astronomical Observatory GRB team, report: "The 58 x 58 arcmin area centered at the BeppoSAX WFC error circle of GRB010214 (G. Gandolfi, GCN #933) were imaged on Feb. 14 between 16:48 UT to 17:29 UT and 19:02 UT to 21:53 UT (8 to 13 hours after the burst) with the BAO 0.6/0.9-m Schmidt telescope. Image information is as followes: No Image Name start time exposure Filter Notes (UT) (seconds) -- -------------------- ---------- --------- ------- -------------- 01 p1751955MG01i039.fit 16:47:45.0 600 BATC-i star elongated 02 p1751955MG01i040.fit 17:01:25.0 300 BATC-i 03 p1751955MG01i041.fit 17:09:13.0 300 BATC-i 04 p1751955MG01i042.fit 17:16:44.0 300 BATC-i 05 p1751955MG01i043.fit 17:24:00.0 300 BATC-i 06 p1751955MG01i047.fit 19:02:16.0 1200 BATC-i 07 p1751955MG01i048.fit 19:24:31.0 1200 BATC-i 08 p1751955MG01n050.fit 20:24:59.0 1200 BATC-n 09 p1751955MG01n051.fit 20:47:26.0 1200 BATC-n 10 p1751955MG01n052.fit 21:10:03.0 1200 BATC-n 11 p1751955MG01n053.fit 21:32:59.0 1200 BATC-n There were no guiding for images (01)-(05) and the first image had very bad tracing for the low pointing direction of the telescope. The filters used were BATC-i (6660A +/- 240A) and BATC-n (8480A +/- 75A). Visual comparison of the BeppoSAX WFC error circle area for the combined image of (06) and (07) (detection limit about R=20) and the combined image of (08)-(11) with the DSS2 red image shows no afterglow candidate. There is a faint object only appeared in image (2) at RA(2000)=17:40:57.68, Dec(2000)=+48:33:58.3, with R=19.1 (comparison star: RA=17:41:01.76, Dec= +48:33:13.7, R=15.6). It was not bad pixel or ghost image. But the possibility of cosmic ray could not be excluded completely. Observations with large telescope might be necessary. The central part of the image (2) could be found at http://vega.bac.pku.edu.cn/~zj/grb/grb010214/p1751955MG01i040.gif This report may be cited." -- ======================================================================== Jin Zhu | Tel.: +86-10-62751286 (O) Beijing Astronomical Observatory | +86-314-5520267 (Schmidt dome) Chinese Academy of Sciences | Pager: +86-10-96301682333 P. R. China | Fax : +86-10-62765031 ------------------------------------------------------------------------ Room 2919, No. 2 Science Building, CAS-PKU Beijing Astrophysics Center, Peking University, Beijing 100871, P. R. CHINA. ------------------------------------------------------------------------ email: zj@bac.pku.edu.cn http://vega.bac.pku.edu.cn/~zj ========================================================================