GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile) imaged the field of GRB 081230 (Swift trigger 338633, La Parola et al., GCN 8753) simultaneously in g'r'i'z'JHK bands We detected and confirm the afterglow candidate in all bands, at the position: RA(J2000): 02:29:19.51 DEC(J2000): -25:08:49.95 with uncertainties of 0.5" in each...Full Text

Using the data set from T-300 to T+1197 sec from the recent telemetry downlink, we report further analysis of BAT GRB 081230 (trigger #338633) (La Parola, et al., GCN 8753). The BAT ground-calculated position is RA, Dec = 37.330, -25.145 deg which is RA(J2000) = 02h 29m 19.2s Dec(J2000) = -25d 08' 42.6" with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial...Full Text

We have analysed the first 35 ks of XRT observations for GRB 081230 (La Parola et al. GCN 8753), with an exposure time of 104 s in WT mode and 11.4 ks in PC mode. The astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue) is RA, Dec = 37.3314 -25.1477, corresponding to: RA (J2000): 02h 29m 19.53s Dec (J2000): -25d 08' 51...Full Text

The Swift/UVOT began observerving the field of GRB 081230 132 s after the BAT trigger ( La Parola et al., GCN 8753). We detect the optical afterglow in the white, v, b and u filters at the position: RA(J2000.0) = 02:29:19.467 DEC(J2000.0) = -25:08:51.0 with an estimated uncertainty of 0.9 arcsec (radius, 90% confidence). This position is consistent with the UVOT-enhanced XRT position (Osborne...Full Text

Using 1640 s of XRT Photon Counting mode data and 4 UVOT images for GRB 081230, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 37.3314, -25.1477 which is equivalent to: RA (J2000): 02h 29m 19.53s Dec (J2000): -25d 08' 51.8" with an uncertainty of 1.8 arcsec (radius, 90% confidence). This position...Full Text

The Swift/UVOT detects a faint source in the XRT error circle for GRB 081230 (La Parola, et al. 2008, GCN 8753). The source has a preliminary position of RA (J2000) 02:29:19.48 = 37.33117 (deg) Dec (J2000) -25:08:48.5 = -25.14682 (deg) and a preliminary u-band magnitude of u = 20.6 +/- 0.3 mag in a 250 s exposure starting 131 s after the BAT trigger. The quoted magnitude has...Full Text

ROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia, responded to GRB 081230 (Swift trigger 338633). The first image was at 20:47:53.4 UT, 700.8 s after the burst (8.4 s after the GCN notice time). The unfiltered images are calibrated relative to USNO A2.0. We detect a 19.1 magnitude, steady source in the XRT error box with coordinates: 02:29:19.35 -25:08:49.22...Full Text

At 20:36:12 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 081230 (trigger=338633). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 37.315, -25.142 which is RA(J2000) = 02h 29m 16s Dec(J2000) = -25d 08' 29" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a...Full Text