NOTE: uvot_fluxes_wget.pl vrs. 2018-01-16 fem at 180205d23h57m28s587441usUT NOTE: Source region spec. is: 126.8196 +11.5418 3" NOTE: Used archived uvot source position of 126.81960 11.54180 3.00 NOTE: position reference is GCN_Notice NOTE: A UVOT position was reported in GCN_Notice_Mon_05_Feb_18_04:35:32_UT NOTE: Possible detection in uu at T+490.3 NOTE: Possible detection in wh at T+181.5 NOTE: Possible detection in bb at T+515.0 NOTE: Possible detection in w1 at T+465.9 NOTE: Possible detection in vv at T+158.3 NOTE: Possible detection in w2 at T+391.4 NOTE: Possible detection in m2 at T+440.9 WARNING: t_start for light curve (158) and t_start from the exposure report (138) do not agree. Replace ??? in draft Circular with correct value. =========== Draft Upper Limit Circular ======== GRB 180205A: Swift/UVOT Upper Limits S.W.K. Emery (UCL-MSSL) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 180205A ***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????). No optical afterglow consistent with the XRT position *** POSITION REFERENCE is GCN_Circ-22381 *** 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 182 331 147 >15.7 white 182 6473 380 >16.6 v 158 11825 1134 >18.3 b 515 6268 236 >17.8 u 490 6063 236 >17.1 w1 466 5858 236 >17.0 m2 441 12726 1117 >18.4 w2 391 6676 429 >18.7 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998). =========== Draft Detection Circular ======== GRB 180205A: Swift/UVOT Detection S.W.K. Emery (UCL-MSSL) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 180205A ***???*** s after the BAT trigger (***Author*** et al., GCN Circ. ????). A source consistent with the XRT position *** POSITION REFERENCE is GCN_Circ-22381 *** is detected in the initial UVOT exposures. The preliminary UVOT position is: RA (J2000) = 08:27:16.74 = 126.81975 (deg.) Dec (J2000) = +11:32:30.9 = 11.54191 (deg.) with an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence). Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white 182 331 147 15.75 +/- 0.02 v 158 172 13 16.18 +/- 0.16 b 515 535 20 16.71 +/- 0.09 u 490 510 19 15.70 +/- 0.08 w1 466 486 19 15.78 +/- 0.13 m2 441 461 20 15.90 +/- 0.18 w2 391 585 39 17.08 +/- 0.18 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).