{
  "bibcode": "2005GCN..3037....1M",
  "body": "K. Mason, P. Schady (MSSL), M. Ivanushkina (PSU), T. Poole (MSSL), C. Gronwall\n(PSU), A. Blustin (MSSL), P. Brown (PSU), S. Rosen, K. McGowan, M. De Pasquale\n(MSSL), P. Boyd (GSFC/UMBC), S. T. Holland, M. Still (GSFC/USRA), W. Landsman\n(GSFC), S. Hunsberger (PSU), A. Breeveld (MSSL), P. Roming (PSU), M. Carter, H.\nHuckle (MSSL), P. Broos (PSU), T. Kennedy, P. Smith, B. Hancock (MSSL), S. Koch,\nD. Morris (PSU), S. Barthelmy, T. Sakamoto  (GSFC), J. Nousek (PSU), N. Gehrels\n(GSFC), on behalf of the Swift UVOT team.\n\nAfter further observations of GRB 050215B with the Swift Ultra-Violet/Optical\nTelescope (UVOT), we have identified a source near the position identified by\nTanvir, et al (GCN 3031).  The source was detected at a position of RA =\n11:37:48.03 and Dec = +40:47:43.4 (J2000).  The UVOT alignment is not yet fully\ncalibrated, therefore, we estimate a systematic uncertainty of about +/-\n1arcsecond in this position.  Reexamination of the early time UVOT observations\nat this location are consistent with our previously reported findings of no\ndetected afterglow (Roming et al, GCN 3026).  The source was identified at a\nmagnitude of 21.7 by co-adding three V-band images which were taken 2.2-9.7\nhours after the initial trigger.  Examination of V-band images taken after this\ntime reveal no reliable detections. We caution that the instrument is not yet\nfully calibrated and that the magnitudes presented here may need to be refined.",
  "circularId": 3037,
  "createdOn": 1108826387000,
  "email": "roming@astro.psu.edu",
  "subject": "GRB050215b: Swift UVOT Detection of Afterglow Emission",
  "submitter": "Pete Roming at PSU  <roming@astro.psu.edu>",
  "eventId": "GRB 050215B"
}