Robuta

https://test.gcn.nasa.gov/circulars/6975 GCN - Circulars - 6975 - GRB071021: MITSuME Okayama Optical Upper Limits gcn circulars okayama optical upper https://test.gcn.nasa.gov/circulars/6983 GCN - Circulars - 6983 - GRB071021: Optical+NIR observations gcn circulars optical nir observations