{
  "submitter": "Paul Groot at U. of Amsterdam <paulgr@astro.uva.nl>",
  "createdOn": 883526400000,
  "eventId": "GRB 971227",
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Tyler Barna at University of Minnesota <tylerpbarna@gmail.com>",
  "subject": "Optical Observations for GRB 971227 ",
  "format": "text/plain",
  "version": 2,
  "editedOn": 1720192606232,
  "circularId": 21,
  "email": "circulars@gcn.nasa.gov",
  "body": "Optical Observations for GRB971227                                     #021\n\nT.J. Galama, P.J. Groot (University of Amsterdam), T. von Hippel \n(University of Wisconsin) and A. Diercks (University of Washington, Seattle),\nJ. van Paradijs (UoA and University of Alabama in Huntsville), C. Kouveliotou \n(USRA at NASA/MSFC) report:\n\"R-band observations of the proposed OT to GRB971227 (Castro-Tirado \net al., IAUC 6800) taken with the Kitt Peak 0.9m telescope at December \n29.53 UT and the 3.5m Apache Point Telescope at December 30.44 UT show this \nobject at a constant level of R=20.4 +/- 0.1 mag, at a position \nRA=12h57m08.65s, Dec=+59d24'40\" (J2000).  It is 1.4 magnitudes fainter than a \nrelatively bright (R=19.0) star located at RA=12h57m04.8s, Dec=+59d24'42.0\" \n(J2000).  Both object appear in the Digital Sky Survey with a relative \nmagnitude difference comparable to this value.  In the Apache Point \nimage the source appears to be slightly extended, which indicates it may be \na galaxy.   \nNo object in the SAX NFI errorbox (Piro et al., IAUC 6797) appears to\nvary at a level of more than 0.3 mag, down to a limiting magnitude of R=21.5\".\n\nPlease direct communications to paulgr@astro.uva.nl",
  "bibcode": "1997GCN....21....1G"
}