TITLE:   GCN CIRCULAR
NUMBER:  7559
SUBJECT: GRB080330: optical observations
DATE:    08/04/01 11:28:09 GMT
FROM:    Vladimir Sokolov at SAO RAS  <sokolov@sao.ru>

A. S. Moskvitin, T. A. Fatkhullin, V. N. Komarova, A. N. Burenkov (SAO-RAS,
Nizhnij Arkhyz)
on behalf of larger GRB follow up collaboration  report:


We observed the GRB 080330 afterglow (Mao et al., GCN 7537) in the R-band
(exposure 3x600 sec)
with the 1-m telescope of SAO RAS on March 30.928, 18.58 hours after the
trigger.
The weather conditions were tolerable.

The optical transient (Klotz et al., GCN 7536; Mao et al., GCN 7537,
Schaefer & Guver, GCN 7538; Gomboc et al., GCN 7539; Bloom & Starr,
GCN 7542; A. Sergeev et al., GCN 7556) is clearly detected.

The photometry of the afterglow is calibrated against 8 stars from USNO-A2.0.
The R-magnitude of the object is 21.49+/-0.28.

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