TITLE:   GCN CIRCULAR
NUMBER:  27805
SUBJECT: GRB 200524A: Liverpool Telescope observations
DATE:    20/05/24 22:28:15 GMT
FROM:    Daniel Perley at Liverpool JMU  <d.a.perley@ljmu.ac.uk>

D. A. Perley (LJMU) and Anna Ho (Caltech) report:

We observed the location of ZTF20abbiixp/AT2020krl (Ho et al., GCN 
27799), the presumed optical afterglow of GRB 200524A (Fana Dirirsa et 
al., GCN 27797), with the 2m robotic Liverpool Telescope between UT 
2020-05-24 21:39 and 21:53.  We acquired 120s of exposure time in each 
of the u, g, r, i, and z filters.  Photometry is as follows (all times 
relative to the LAT trigger as reported in GCN 27797):

  t_mid(d)  filter  magnitude
  --------  ------  ----------
  0.6921    z       20.49 +/- 0.15
  0.6941    i       20.86 +/- 0.09
  0.6961    r       21.03 +/- 0.07
  0.6981    g       21.32 +/- 0.06
  0.7000    u       21.64 +/- 0.24














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