{
  "bibcode": "2017GCN.21762....1M",
  "body": "X.M. Meng (NAOC), L.P. Xin (NAOC), S. Antier (LAL), C. Wu (NAOC),\nN. Leroy (LAL), X.H. Han (NAOC), J.Y. Wei (NAOC), L. Huang (NAOC),\nY. Xu (NAOC), H.B. Cai (NAOC), J. Wang (NAOC), X.M. Lu (NAOC),\nY.L. Qiu (NAOC), J.S. Deng (NAOC), L. Cao (NAOC), S. Wang (NAOC),\nL. Jia (NAOC), S.C. Zou (NAOC), S.F. Liu (NAOC), Q.C. Feng (NAOC),\nH.L. Li (NAOC), D.W. Xu (NAOC), Y.J. Xiao (NAOC), W.L. Dong (NAOC),\nY.T. Zheng (NAOC), E.W.Liang (GXU), X.G.Wang (GXU), Y.G. Yang (HBNU),\nB. Cordier (CEA), S.N. Zhang (NAOC), D. Dornic (CPPM), B.B. Wu (IHEP),\nD. Turpin (IRAP), A. Klotz (IRAP), C.Lachaud (APC),\non behalf of the SVOM Gravitational Astronomy group report:\n\nWe made a follow-up observation for the reported source in\nEmery et al. (GCN 21733)  at  2017-08-29 at  18:40:30  UTC,\nwith the BFOSC (Beijing Faint Object Spectrograph and Camera)\non the 2.16-m telescope at Xinglong Observatory, China.\n\nNo new source was detected in the stacked image with an total\nexposure time of 2*600 sec, down to an upper limit of R~22\nmag for 3 sigma, calibrated to the nearby SDSS DR9 r magnitudes.\n\nOur results are consistent with the previous reports by\nTomasella et al. (GCN 21745); Pozanenko et al. (GCN 21754);\nCopperwheat et al. (GCN 21755); Jonker et al. (GCN 21756);\nButler et al. (GCN 21757), Emery et al., (21758) that\nthe source was fading greatly,  compared to the brightness\nreported in Emery et al. (GCN 21733) .\n\nWe thank the staff of 2.16m telescope in Xinglong observatory,\nespecially Huijuan Wang and Feng Xiao.",
  "circularId": 21762,
  "createdOn": 1504085132000,
  "email": "wuchao.lamost@gmail.com",
  "subject": "LIGO/Virgo G299232: SVOM/2.16-m Optical Telescope Observations of Swift UVOT Transient",
  "submitter": "Chao Wu at NAOC  <wuchao.lamost@gmail.com>",
  "eventId": "LIGO/Virgo G299232"
}