[AAVSO-HEN] GRB 070531: NOT nIR observations

[grb at aavso.org]

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TITLE:   GCN CIRCULAR
NUMBER:  6480
SUBJECT: GRB 070531: NOT nIR observations
DATE:    07/05/31 15:09:03 GMT
FROM:    Antonio Deugarte at IAA-CSIC  <deugarte at iaa.es>

A. de Ugarte Postigo, A.J. Castro-Tirado (IAA-CSIC,
Granada), C. Gonzalez (IAC Tenerife), A. Cabrera
(GTC Project Office) on behalf of a larger
collaboration, report:

"We have observed the field of GRB 070531 (Markwardt
et al., GCNC 6475) in J, H and K-bands using the 2.5mNOT
(+NOTCAM) Roque de los Muchachos Observatory (Spain)
starting at 04:17 UT (2.11 hours after the burst). We do
not detect any source in the XRT error box (Page et al.
GCNC 6477) down to J~19.5 (3-sigma)."

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