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GCN Circular 10419

GRB 100213B: PAIRITEL NIR Upper Limits
2010-02-14T08:57:49Z (14 years ago)
Adam Morgan at U.C. Berkeley <>
A. N. Morgan, B. E. Cobb, C. R. Klein, J. S. Bloom (UC Berkeley), report:

We observed the field of GRB 100213B (Vetere et al., GCN 10412) with
the 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began
under good weather conditions at 2010-02-14 02:53:48 UT, ~3.92 hours
after the Swift trigger.  In mosaics (effective exposure time of ~2387
seconds) taken simultaneously in the J, H, and Ks filters, we do not
detect any sources within the XRT error circle, nor at the potential
NOT position (Malesani et al., GCN 10413).

The preliminary photometry yields:

t_mid(h)    exp(s)  filt    U. Limit (3 sig)
4.44        2387    J       > 19.2
4.44        2387    H       > 18.2
4.44        2387    Ks      > 17.1

Observations are ongoing.  All magnitudes given in the Vega system,
calibrated to 2MASS.  No correction for Galactic extinction has been
made to the above reported values.
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