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GCN Circular 734

Subject

GRB 000620, optical observations

Date

2000-06-30T15:02:17Z (24 years ago)

From

Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>

J. Gorosabel  (DSRI, Copenhagen),
A. Henden (USRA/USNO)  on behalf of the USNO GRB team,
A.J. Castro-Tirado (LAEFF-INTA, Madrid, and IAA-CSIC, Granada),
P. Gutierrez (IAA-CSIC, Granada),
S. Klose (Thueringer Landessternwarte, Tautenburg), 
J. Greiner (AIP, Potsdam),
J.M. Castro Ceron (ROA, San Fernando),
E. Costa and M. Feroci, on behalf of the BSAX team (IAS, Rome),

report on behalf of a larger European collaboration:

"We have obtained R-band images of the GRB 000620 field (GCN #716Not found
 
 
,  
 #722Not found
 
 
)  with the 1.0-m USNO and 2.2-m CAHA telescopes, as follows: 

      Date(UT)      T-T0(hr)    Exp.(s)  Seeing(")    Lim. Mag.
 -------------------------------------------------------------
  20.465 -- 20.472   5.67      2x300       3.0"         19.8
  20.898 -- 20.905  16.08        600       2.0"         21.7
  21.872 -- 21.879  27.45        600       1.5"         22.1
  22.869 -- 22.885  63.49      3x600       1.5"         22.8
 -------------------------------------------------------------

 No object within the BSAX WFC error box brighter than R ~ 19.5
 is found to exhibit a variation larger than 0.25 mag."

This message is citable.