TITLE: GCN CIRCULAR NUMBER: 9369 SUBJECT: GRB 090515: Swift/UVOT Observations DATE: 09/05/15 20:10:18 GMT FROM: Michael Siegal at Swift/PSU M. H. Siegel (PSU) and A. P. Beardmore (Leicester) report on behalf of the Swift/UVOT team. The Swift/UVOT began observing the field of GRB 090515 67s after the BAT trigger (Beardmore et al., GCN Circ. 9356). Data summed from the first and second orbits does not reveal a source at the refined position of the X-ray afterglow (Osborne et al., GCN Circ. 9367). The 3-sigma upper limits for the finding chart (fc) and summed exposures are reported below: FILTER T_start(s) T_stop Exposure Mag/3UL ============================================================= white fc 67 216 146 > 20.35 white 67 2389 488 > 21.24 white 5901 13321 401 > 21.12 v 608 2439 213 > 19.27 v 6311 7947 393 > 19.62 b 534 2365 194 > 20.15 b 5696 13291 688 > 20.70 u 278 528 245 > 19.83 u 6926 12386 491 > 20.40 uvw1 657 2488 214 > 19.83 uvw1 6722 8290 327 > 20.01 uvm2 805 2291 97 > 19.07 uvm2 6516 8151 393 > 20.16 uvw2 583 2414 213 > 20.11 uvw2 6107 7742 393 > 20.48 ================================================================= The above magnitudes are not corrected for the Galactic extinction corresponding to a reddening of E_{B-V} = 0.02 (Schlegel et al., 1998, ApJS, 500, 525). The photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).