{
  "bibcode": "2013GCN.14617....1W",
  "body": "K. Wiersema (U. of Leicester), O. Vaduvescu (ING), N. Tanvir (U. of Leicester), \nA. Levan (Warwick) and O. Hartoog (U. of Amsterdam) report:\n\nWe observed the position of GRB 130427A with the 4.2m William Herschel telescope,\nusing the PFIP camera, on May 8th, under good seeing conditions (0.7 arcseconds). \nExposures of 4x600 seconds were obtained using a narrowband filter covering \nthe [O II] emission line doublet (3728 A) at the redshift of the \nGRB (z=0.3399; Levan et al., Xu et al. and Flores et al.; GCN 14455, 14478, 14491).\nWe used this filter to obtain the best visibility of the host galaxy against the bright afterglow\nand possible supernova contribution.\nThe resulting data show a clear detection of the host galaxy. The GRB is located near, but\nsomewhat offset from, a brighter patch in the host. The host is an irregular galaxy, with\na broadly elliptical shape. The GRB is located North-West of the\nmajority of extended, smooth, host emission - a convenient choice in spectrograph slit\nposition angle may minimize host contamination and aid in identification of SN signatures.\nThe long axis of the host is approximately oriented along 70 degrees position angle (where\nNorth=0, East = 90 degrees), and is approximately 3.4 arcseconds in length.\n\nA jpg finder chart of the [OII] imaging can be found here:\nhttp://www.star.le.ac.uk/~kw113/grb130427A/hostgalaxy_130427a.jpg\n\n[GCN OPS NOTE(09may13): Per author's request, the \"Apr 8\" was changed to \"May 8\"\nin the first sentence.]",
  "circularId": 14617,
  "createdOn": 1368129782000,
  "email": "kw113@leicester.ac.uk",
  "subject": "GRB 130427A: host galaxy observations",
  "submitter": "Klaas Wiersema at U Leicester  <kw113@leicester.ac.uk>",
  "eventId": "GRB 130427A"
}