Robuta

https://www.msa.maryland.gov/megafile/msa/speccol/sc5400/sc5496/029800/029866/html/029866collect.html Ot. McCullough, MSA SC 5496-29866 ot mccullough msa sc https://gcn.nasa.gov/circulars/29866 GCN - Circulars - 29866 - GRB 210420B: Ondrejov D50 optical afterglow detection gcn circulars grb optical afterglow