{
  "circularId": 36155,
  "createdOn": 1713432348538,
  "submitter": "Dingrong Xiong at Yunnan Observatories of CAS, China <xiongdingrong@ynao.ac.cn>",
  "bibcode": "2024GCN.36155....1X",
  "eventId": "EP240416a",
  "body": "D. R. Xiong, J. M. Bai, J. R. Mao, Y. F. Fan, K. Ye, C. J. Wang, Y. X. Xin, B. L. Lun, J. J. Zhang, X. H. Zhao, L. Xu, K. X. Lu, X. Ding, X. G. Yu, D. Q. Wang, S. S. He, X. L. Zhang, J. G. Wang (Yunnan Observatories/CAS), A. J. Castro-Tirado, E. Fernandez-Garcia, Y. D. Hu (IAA-CSIC) and C. J. Perez del Pulgar (UMA) on behalf of the BOOTES team report:\n\nWe observed the X-ray transient EP 240416a (Cheng et al., GCN 36138), and did not found any optical counterpart within an uncertainty of 3 arcmin in radius compared to the PanSTARRS DR1 image. The upper limits of magnitudes (without being corrected for Galactic extinction) are given as follows. \n\nTmid-T0 (day) | UT (start) | Upper Limit (error) | Exposure Time | Filter \n\n--------------------------------------------------------------------------------------------------------------\n\n0.96 | 24-04-17T01:50:42 | 19.56 (0.2) | 100s*10 | Clear\n\n-------------------------------------------------------------------------------------------------------------\n\nThe Burst Optical Observer and Transient Exploring System (BOOTES) is a world-wide automatic telescope network which aims to repaid follow-up of transient and astrophysical sources in the sky for which the first station was installed in 1998 (Castro-Tirado et al. 1999; Hu et al. 2021). The BOOTES-2/TELMA robotic telescope at IHSM La Mayora (UMA-CSIC) in Algarrobo Costa (Malaga, Spain). We acknowledge the support of these staffs from the BOOTES telescope networks.\n\n==================================================================\n\n ",
  "submittedHow": "email-legacy",
  "subject": "EP240416a: BOOTES-2/TELMA Optical Upper Limit"
}