{
  "bibcode": "2001GCN...997....1K",
  "body": "S. Klose, B. Stecklum, H. Linz, and U. Laux (Thueringer Landessternwarte \n   Tautenburg) \n\n\nreport:\n\nThe error box of GRB 010214 (Gandolfi et al., GCN #932) was imaged\nin the I-band using the Tautenburg Schmidt telescope equipped with\nthe Schmidt focus CCD camera (2k x 2k). The observing log is as follows:\n\n  Run 1:   Feb 15,  0:55 UT - 1:35 UT  and   2:24 UT - 3:05 UT \n  Run 2:   Feb 16,  2:01 UT - 2:48 UT  and   3:38 UT - 3:48 UT \n  Run 3:   Feb 27,  3:44 UT - 4:24 UT.                         \n\nThe R-band afterglow candidate reported by Rol et al. (GCN #955) is\nclearly detected on the combined frames taken during the second\nobserving run. Based on the DSS2 red coordinate system we obtain for this\nsource RA, DEC (2000) = 17:41:03.0, 48:34:29 (+/- 0.4\"). Using the\nphotometric standards provided by Henden (GCN #988) we measure a mean \nI-band magnitude of 21.9 +/- 0.4 during run 2.\n\nThe combined frames of run 1 are somewhat less deep and the same holds for\nthe combined frames of run 3. The source is also detectable on these\nimages but very close to the detection limit which excludes an aperture\nphotometry. However, a visual comparison of the optical appearance of the\nafterglow candidate on these images with the optical appearance of a\nnear-by, faint stellar object at RA, DEC (2000) = 17:41:07.7, 48:35:02\n(+/- 0.8\") allows us to state that we see no evidence for a fading of the\nafterglow candidate between run 1 and run 3. Any fading must be less than\nabout 0.5 mag.\n \nIn conclusion, if this source is the combined OT + underlying host\ngalaxy then even during our first observing run (about 0.7 days after the\nburst) the I-band flux of the afterglow did not exceed the I-band flux of\nthe underlying host by more than about 50 percent.\n\nThe I-band image is posted on the Tautenburg Web page at\nhttp://www.tls-tautenburg.de/research/grb010214.html. It can also be\nobtained via anonymous ftp from ftp.tls-tautenburg.de, directory\n/pub/klose/GCN/.\n\n\nThis message is quotable.",
  "circularId": 997,
  "createdOn": 983379052000,
  "email": "klose@tls-tautenburg.de",
  "subject": "GRB 010214, I-band data",
  "submitter": "Sylvio Klose at TLS Tautenburg  <klose@tls-tautenburg.de>",
  "eventId": "GRB 010214"
}