TITLE: GCN CIRCULAR NUMBER: 14188 SUBJECT: GRB 130206A: XRT and UVOT follow-up observations. DATE: 13/02/07 20:22:53 GMT FROM: MSSL Swift/UVOT team at MSSL/Swift Andy Beardmore (Univ. Leicester), A. Breeveld (MSSL-UCL) and M. De Pasquale (MSSL-UCL) on behalf of the Swift team, report: The Swift-XRT began observing the field of GRB130206A (De Pasquale et al., GCN Circ. 14181) in photon counting mode at 2013-02-06 20:28 UT, 3090 s after the trigger. In 10.3 ks of data we find a faint source at RA, Dec = 140.37670, -58.19362 which is equivalent to RA (J2000) = 09h 21m 30.41s Dec (J2000) = -58d 11' 37.0" with an uncertainty of 5.6 arcseconds (radius, 90% confidence). The source is located 20 arcseconds from the BAT refined position (Stamatikos et al, GCN Circ, 14186), within the BAT error circle. The source is detected at a count rate of 0.0017 ± 0.0006 count/s. We cannot tell if it is fading at this time. The Swift/UVOT began settled observations of the field of GRB130206A 3081 s after the BAT trigger. No optical afterglow consistent with the XRT position is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 3081 3231 147 >21.4 white 3081 16409 2114 >23.1 v 4062 22199 1319 >20.3 b 3445 15497 1278 >22.3 u 3239 28222 634 >21.2 w1 4473 27971 1082 >21.0 m2 4268 27065 1312 >20.7 w2 3857 32412 2546 >21.3 The magnitudes in the table are not corrected for the strong Galactic extinction due to the reddening of E(B-V) = 0.48 in the direction of the burst (Schlegel et al. 1998).