GCN Circular 18070
D. Kopac (U Ljubljana), C. Guidorzi (U Ferrara), C.G. Mundell (U Bath), I.A. Steele (LJMU), A. Gomboc (U Ljubljana), on behalf of a large collaboration report: The 2-m Liverpool Telescope automatically began observing Swift Trigger 650221/IGR J00291+5934 (Barthelmy et al., GCN 18061) with RINGO3 polarimeter, starting 5 minutes post BAT trigger. Observations continued for 2 hours. At the position consistent with Fox & Kulkarni 2004 (ATel #354), and D'Avanzo et al. 2007 (A&A, 472, 881), we clearly detect the optical counterpart. The estimated magnitude is R = 18.07 +- 0.03 at 36.4 minutes post trigger, calibrated against nearby USNO-B1.0 stars.