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GCN Circular 28773

GRB 201020B: follow-up observations with Savelli Telescope
2020-10-24T19:34:16Z (3 years ago)
Luciano Nicastro at INAF-OAS <>
L. Nicastro (INAF-OAS), A. Brosio (Osservatorio Astronomico Lilio), S.
Savaglio (UNICAL)

We observed the afterglow
(Lipunov et al., GCN 28718; Xu et al., GCN 28719; Belkin et al., GCN 28725;
Breeveld & Lien, GCN 28743; Vinko et al., GCN 28750; Kumar et al., GCN
28753; Kann et al., GCN 28765; Belkin et al., GCN 28768;  Dimple et al.,
GCN 28772)
of GRB 201020B
(Fermi GBM Team, GCN 28702; Fermi GBM detection: Malacaria & Meegan, GCN
28710; Fermi LAT detection: Arimoto et al., GCN 28716; AGILE detection:
Ursi et al., GCN 28714; Konus-Wind detection: Ridnaia et al., GCN 28723)
with the 0.5m telescope of the Osservatorio Astronomico Lilio, located in
Savelli (South Italy).

Date / UT-mid    JD    T-T0(hr)    Exp(s)    Filter     Mag (AB)
2020-10-21T18:47:48.85 | 2459144.28320 | 25.23  | 5 x 300 | Sloan-r | 19.60
+/- 0.12
2020-10-21T19:35:28.72 | 2459144.31630 | 26.03  | 5 x 300 | Sloan-g | 20.02
+/- 0.15

Magnitudes, calibrated wrt nearby PanSTARRS field stars, are not corrected
for galactic extinction.

Fog prevented us from performing further observations in the following
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