GCN Circular 3392
J. Bloom (UCB), C. Blake (Harvard), J. X. Prochaska (UCSC), J. Hennawi (UCB), M. Gladders (Carnegie), B. Koester (U Michigan) and H. W. Chen (MIT) report: Connecting a WIYN 600s Sloan r band image to compact astrometric sources in the 2MASS catalogue we find the following refined position for the putative host (Bloom et al. GCN #3386) at redshift z=0.226 (Prochaska et al. GCN #3390) and counterpart (Bloom et al. GCN #3388): galaxy: RA = 12:36:12.87, Dec = 28:58:58.5 counterpart: RA = 12:36:13.67, Dec = 28:58:57.0 (J2000; absolute uncertainty of 200 milliarcsec in each direction). The proposed counterpart is thus 1.51" S, 10.41" E from the galaxy and 1.61" S, 0.88" E of the XRT position (Kenea et al. #3383). This distance of 1.84 arcsec is well within the astrometric uncertainty of the XRT position. The position reported here is consistent with that reported in Cenko et al. GCN #3391. Another zoom in image is now posted at: http://astro.berkeley.edu/~jbloom/grb050509b-zoom.ps http://astro.berkeley.edu/~jbloom/grb050509b-zoom.gif This message may be cited.