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GRB 080320: optical limit.
Malesani, D.; Djupvik, A. A.; Niemela, J.; Fynbo, J. P. U.
GRB Coordinates Network, Circular Service, 7489, 1 (2008)
12/2008
ABSTRACT
We observed the field of GRB 080320 (Grupe et al., GCN 7473) with the Nordic Optical Telescope. R-band observations were carried out with the StanCam instrument, with mean time 2008 March 20.254 UT (1.47 hr after the GRB).
We do not detect any object at the position of the afterglow reported by Tanvir et al. (GCN 7488) nor inside the XRT error circle (Goad et al., GCN 7479). Our limiting magnitude is R=22 (based on USNO-B1), consistent with the nearly-simultaneous measurement of Tanvir et al. (GCNs 7480, 7488).