TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3562 SUBJECT: GRB 050701, optical observations DATE: 05/07/02 21:20:02 GMT FROM: Alberto Castro-Tirado at LAEFF-INTA T. Britton (Univ. of Auckland), J. Gorosabel (IAA-CSIC Granada), P. Tristram, Ph. Yock (Univ. of Auckland), M. Sasaki, C. Okada, S. Nakamura and K. Kamiya (Nagoya Univ.), O. Bogdanov (Nikolaev State Univ.), S. Guziy and A. J. Castro-Tirado (IAA-CSIC), report: Following the detection of GRB 050701 by Swift/BAT (Boyd et al, GCN 3356), we obtained R- & I-band images starting 5.0 hours after the trigger, at the 0.6 m and 1.8 m telescopes at Mt. John Astronomical Observatory. No new source is detected within the 6" radius XRT error circle (Hurkett et al., GCN 3560) down to the DSS-2 limiting magnitude. We also notice that there is considerable extinction towards this line of sight. This message can be cited.