NOTE: Possible detection in vv at T+78109.0 NOTE: Possible detection in w2 at T+77202.7 NOTE: Possible detection in m2 at T+79020.4 =========== Draft Upper Limit Circular ======== GRB 140809A: Swift/UVOT Upper Limits ***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140809A 77203 s after the GBM trigger (***Author*** et al., GCN Circ. ????). No optical afterglow consistent with the optical position (Masi GCN Circ. 16675) 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 initial exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag v 78109 79016 885 >17.7 m2 79020 79197 174 >18.9 w2 77203 78103 886 >19.7 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998). =========== Draft Detection Circular ======== GRB 140809A: Swift/UVOT Detection ***UBS*** (***INSTITUTION***) and ***BA*** (***BA INSTITUTION***) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140809A 77203 s after the GBM trigger (***Author*** et al., GCN Circ. ????). A source consistent with the optical position (Masi GCN Circ. 16675) is detected in the initial UVOT exposures. 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 v 78109 78409 295 17.80 +/- 0.07 m2 79020 79197 174 19.55 +/- 0.29 w2 77203 78103 886 20.05 +/- 0.14 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).