As of 22 March 2006: Looking at the 90+ MIS fields, I have found that: ...................... For fwhm < 10 arcseconds, fov_radius < 0.55 ...................... And nuv_mag >16, <19 (all values in arcseconds): | color_range | mddx | mddy | nddx | nddy | fddx | fddy | (all) ... ... 0.09 -0.14 ... ... (no match) ... ... 0.09 -0.11 ... ... (match only) 0.10 0.23 0.12 -0.27 0.03 -0.50 -20 to -2 0.10 0.26 0.12 -0.25 0.03 -0.49 -2 to 20 0.08 0.10 0.09 -0.33 0.03 -0.51 ...................... Or nuv_mag >19, <22 | color_range | mddx | mddy | nddx | nddy | fddx | fddy | (all) ... ... 0.02 -0.09 ... ... (no match) ... ... 0.02 -0.05 ... ... (match only) 0.00 0.27 0.02 -0.27 0.04 -0.53 -20 to -2 0.09 0.29 0.05 -0.15 0.00 -0.44 -2 to 20 0.00 0.27 0.02 -0.28 0.04 -0.54 ......................