Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 9242

Subject
GRB 090423: Y-band field calibration update/correction
Date
2009-04-25T02:31:03Z (15 years ago)
From
Myungshin Im at Seoul Nat U <mim@astro.snu.ac.kr>
M. Im, Y. Jeon, C. Choi, W. Park, I. Lee Seoul National Univ),
  Y.-B. Jeon (KASI) and Y. Urata (NCU) on behalf of EAFON team.

  The Y-band calibration data reported earlier by Im et al.
  (GCN 9221) have been updated with a revised zero point,
  and the catalog now includes more objects.

  The updated field calibration data are available
  at the same location as before:

  http://astro.snu.ac.kr/~mim/grb/readme
  http://astro.snu.ac.kr/~mim/grb/grb090423_ycal.dat
  http://astro.snu.ac.kr/~mim/grb/yobj.reg
  http://astro.snu.ac.kr/~mim/grb/chart.gif

  We thank the LOAO operator, J. Yoon for his assistance for this
  observation.
Looking for U.S. government information and services? Visit USA.gov