{
  "bibcode": "2020GCN.27329....1H",
  "body": "Y.-D. Hu, A. J. Castro-Tirado and E. Fernandez-Garcia (IAA-CSIC), C. \nPerez del Pulgar, A. Reina, A. Castellon, I. Carrasco, I. Perez-Garcia \n(UMA), F. Rendon (IAA-CSIC and INTA-CEDEA), on behalf of a larger \ncollaboration, report:\n\nThe 30cm BOOTES-1 robotic telescope at INTA-CEDEA in Huelva (Spain) \nautomatically responded to the Swift trigger of GRB 200306C (Gropp et \nal., GCNC 27326). A sequence of 1-s images (clear filter) were obtained \nstarting at 22:52:28 UT (i.e. 109s after the burst). At the UVOT \nposition reported by Swift an optical transient is detected with R = \n14.9, in agreement with the MASTER (Lipunov et al. GCNC 27324) and FRAM \ndetections (Jelinek et al. GCNC 27328). A detailed analysis for the \nsequence of images which were obtained is ongoing. The magnitude is \ncalibrated against the USNO-B1 catalog and is not corrected for Galactic \nextinction in the direction of the GRB.\n\nWe thank the staff at INTA-CEDEA for its excellent support.",
  "circularId": 27329,
  "createdOn": 1583539488000,
  "email": "ajct@iaa.es",
  "subject": "GRB 200306C: BOOTES-1 detection of the optical afterglow",
  "submitter": "Alberto J. Castro-Tirado at IAA-CSIC  <ajct@iaa.es>",
  "eventId": "GRB 200306C"
}