TITLE:   GCN CIRCULAR
NUMBER:  27810
SUBJECT: GRB 200524A: OAJ multicolor afterglow detection
DATE:    20/05/25 00:52:33 GMT
FROM:    Alexander Kann at IAA-CSIC  <kann@iaa.es>

M. Blazek, D. A. Kann (both HETH/IAA-CSIC), A. de Ugarte Postigo 
(HETH/IAA-CSIC, DARK/NBI), C. Thoene, J. F. Agui Fernandez (both 
HETH/IAA-CSIC), and N. Maicas (CEFCA) report:

We observed the field of GRB 200524A (Fermi-LAT detection: Dirirsa et 
al. GCN #27797, Fermi GBM detection: Pookalil et al., GCN #27809) with 
the T80 0.8m telescope at the Observatorio de Javalambre (Teruel, 
Spain). Observations consisted of 3 x 300 s in g', 2 x 300 s in r', and 
5 x 180 s in i' and z' each.

The afterglow (Ho et al., GCN #27799, Kumar et al., GCN #27800, 
Rumyantsev et al., GCN #27802, Sanwal et al., GCN #27803, Perley et al., 
GCN #27805, Kumar et al., GCN #27806, de Ugarte Postigo et al., GCN 
#27807) is well-detected in each image. In the stacked r' image centered 
at 21:59:24 UT (mid-time 0.705135 days after the Fermi GBM trigger), we 
measure r' = 21.08 +/- 0.04 mag (AB mags) against PanSTARRS stars in the 
field.