TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1296 SUBJECT: GRB 020322: Optical Sources and Improved Astrometry DATE: 02/03/23 04:33:49 GMT FROM: Josh Bloom at CIT GRB 020322: Optical Sources and Improved Astrometry J. S. Bloom (Caltech), N. Mirabal & J. P. Halpern (Columbia), D. W. Fox, and P. A. A. Lopes (Caltech), report on behalf of a larger collaboration: "A stacked Gunn r-band image from the Palomar 60-inch (9x10 min; see GCN #1294) reveals another faint source in the southeast portion of the XMM error circle. ID x y J2000 a 1129.286 1408.630 RA = 18:01:04.20, Dec = +81:06:41.27 b 1135.912 1373.888 RA = 18:01:02.98, Dec = +81:06:28.17 c 1126.379 1367.044 RA = 18:01:04.51, Dec = +81:06:25.49 Source "a" (outside the error circle) is that discussed in Szentgyorgyi et al. (GCN #1295), source "b" (inside the error circle) is from Bloom et al. (GCN #1294), and source "c" (inside the error circle) is the faint source mentioned here. The ICRS positions are found by comparison with the USNO A2.0 and are uncertain by about 300 mas, 350 mas in the RA and DEC, respectively. The x, y coordinates are in pixels of the stacked image. This .fits image, with a WCS written in the header, may be obtained at: http://www.astro.caltech.edu/~jsb/GRB/sum-r1.fits.gz An image of the field showing source a,b, and c may be found at http://www.astro.caltech.edu/~jsb/GRB/grb020322-palr.gif This message may be cited.