[vsnet-grb-info 1984] GRB 050817: Optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3823
SUBJECT: GRB 050817: Optical observations
DATE:    05/08/17 19:20:46 GMT
FROM:    Javier Gorosabel at LAEFF-INTA, Madrid  <jgu at laeff.esa.es>

P. Tristram (Canterbury Univ. Mt John Observatory), 
A. de Ugarte Postigo, J. Gorosabel, S. Guzyi, M. Jelínek, 
A.J. Castro-Tirado(IAA-CSIC), Ph. Yock (Univ. of Auckland) report

" We have observed the field of GRB050817 (Fox et al., GCN 3819) with
the 0.6m MOA telescope at Mt. John Astronomical Observatory using the
wide red and wide blue MOA filters. A combination of 3x300s red-band 
exposures with mean epoch at 14:18:00 UT (1.97 hours after the burst)
shows no new object in the error-box down to a limiting magnitude of
18.5. We note that there is a saturated difraction spike from a nearby
star crossing the field which hides aproximately 5% of it."

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