GRB041211: ashra prototype optical observation. Sasaki, M. ; Aita, Y. ; Aoki, T. ; Asaoka, Y. ; Jobashi, M. ; Manago, N. ; Noda, K. ; Okumura, A. ; Ogawa, S. ; Usami, H. Abstract Publication: GRB Coordinates Network Pub Date: 2004 Bibcode: 2004GCN..2846....1S