GCN Circular 651
R. M. Wagner, P. Eskridge (Ohio State U.), K. Vanlandingham, J. Noel-Storr, N. Mirabal, & J. P. Halpern (Columbia U.) report on behalf of the MDM Observatory GRB follow-up team: "We imaged the error circle of the BeppoSAX WFC localization of GRB 000424 (Piro, GCN #644) on two consecutive nights in the R-band using the MDM 1.3m and 2.4m telescopes. Between April 26.15 and April 27.15, we see no variable object to a 5-sigma limiting magnitude of approximately R = 22.3. This message may be cited."