{
  "bibcode": "2006GCN..4557....1B",
  "body": "J. S. Bloom, K. Alatalo (UC Berkeley) report on behalf of a larger  \ncollaboration:\n\n\"We observed the field of GRB 060121 (Arimoto et al., GCN 4550;  \nPrigozhin et al. GCN 4551) with the 1.3 meter Peters Automated  \nInfrared Imaging Telescope (PAIRITEL) on Mt. Hopkins, Arizona,  \nbeginning at 2006-01-22 04:43:15 UT. In a stack of the first 345  \nseconds of integration, we find no new objects in the HETE-SXC error  \ncircle in JHKs bands brighter than the 2MASS detection levels. All  \nsignificantly detected sources fainter than 2MASS have optically pre- \nimaged counterparts from SDSS (Cool et al. GCN 4554). Our approximate  \n10 sigma detection levels are J=18.7, H=17.6, Ks=16.6 mag,  \nrespectively.\"\n\nThis message may be cited.",
  "circularId": 4557,
  "createdOn": 1137912875000,
  "email": "jbloom@astron.berkeley.edu",
  "subject": "GRB 060121: Infrared Observations",
  "submitter": "Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>",
  "eventId": "GRB 060121"
}