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GCN Circular 8093

GRB 080810: Liverpool Telescope observations
2008-08-11T10:14:52Z (16 years ago)
Cristiano Guidorzi at INAF-OAB <>
C. Guidorzi (INAF-OAB), I. Steele (LJMU), N. Tanvir (U. Leicester)
on behalf of a larger collaboration report:

On 2008 August 11 (03:53:56 UT) we began observing the field of GRB 080810
(Page et al. GCN Circ. 8080) with the Liverpool Telescope using
the r' and i' filters.

The optical afterglow is clearly detected at the position reported
by ROTSE-III (Rykoff GCN Circ. 8084) and the NOT (de Ugarte Postigo
et al. GCN Circ. 8089). We found the following magnitudes:

Telescope   Filter  T_mid[hr]   Exposure[s]      Mag
LT          i'        14.770       300         19.14 +/- 0.04
LT          r'        15.328       300         19.93 +/- 0.04

The calibration was performed using the R2 and I magnitudes
of the following nearby USNOB1 catalogue star: 23:47:06.819,
+00:19:27.15, using R2=15.31, I=14.69.
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