{
  "bibcode": "2018GCN.22637....1S",
  "body": "B. Stecklum, S. Klose, and C. Hoegner (Thueringer Landessternwarte \nTautenburg) report:\n\nWe imaged the field of GRB 180411A (Liu et al., GCN 22630) in the Rc band \nusing the Tautenburg Schmidt telescope equipped with the prime focus CCD \ncamera. Observations started at 19:49 UT, about 7.5 hr after the burst.\n\nInside the XRT error circle (radius 3.5 arcsec; Gibson et al., GCN 22632) \nwe do not find any source. At a mean time of 19:53 UT we constrain the \nmagnitude of any optical transient to R>22 mag.",
  "circularId": 22637,
  "createdOn": 1523523847000,
  "email": "klose@tls-tautenburg.de",
  "subject": "GRB 180411A: Tautenburg observations",
  "submitter": "Sylvio Klose at TLS Tautenburg  <klose@tls-tautenburg.de>",
  "eventId": "GRB 180411A"
}