{
  "bibcode": "1999GCN...340....1P",
  "body": "H. Pedersen, J. Hjorth, B. L. Jensen (Copenhagen), A. O. Jaunsen (Oslo), \nR. Falomo (Padova), I. Burud (Liege), M. I. Andersen, H. Korhonen, \nH. Schwarz (NOT), E. Costa, L. Piro (IAS/CNR, Rome), and, \nE. Pian (Ist.TeSRE, Bologna), report:\n\nWe have used the ALFOSC instrument (field 6' x 6') at the NOT, La Palma,\nto acquire three 4-minute R-band exposures of the position reported\nfrom BeppoSAX (Gandolfi et al., IAU Circular No. 7174). \n\nThe exposures were taken 1999 May 20.898 - 20.910 UT. The seeing was 0.7\". \n\nComparison to the DSS-2 did not reveal any new object. Comparison between \nthe three exposures internally did not reveal any variable object. \n\nOne object drew attention during our inspection of the images:\nthis is the SN-like configuration of an apparently unresolved object \n1.6\" east, 0.5\" south of a galaxy (which, in turn, is well visible on \nthe DSS). The object may well be due to a surface brightness concentration \nin the said galaxy, or the chance superposition of a galactic star.\n\nTo test the visual impression, we have analyzed the images, using \nthe deconvolution technique applied in GCN 320; unfortunately, the\nlow s/n ratio does not allow any clear distinction between resolved\nand not resolved models.\n\nThe position of the object of concern is \nR.A. 08 h 35 m 52.44 s, Decl. +51o 18' 46.9\" (J2000); uncertainty 0.5\".\nIts brightness is estimated at m(R) = 22.0 +- 0.5.  No variability is\nindicated. For the galaxy, we find m(R) = 19.75 +- 0.3. The photometric\nmeasurements stem from a standard calibration of the instrument, for\nwhich m(R) = 16.71 for an object at \nR.A. 08 h 35 m 52.88 s, Decl. +51o 18' 06.2\" (J2000). \n\nA 2' by 2' section of the sum-image, centered on the object is placed on \n\nhttp://www.astro.ku.dk/~holger/g/XRT990520/imag.fits . \n\nA gif-version will be provided later.\n\nBefore any use of this digital data in publications, please consult with us.",
  "circularId": 340,
  "createdOn": 927305164000,
  "email": "holger@astro.ku.dk",
  "subject": "X-ray/GRB 1SAX J0835.9+5118, Optical Observation",
  "submitter": "Holger Pedersen at Copenhagen U Obs  <holger@astro.ku.dk>"
}