### OBSDATE ### 20130106 ### LOGDATE ### 130107 ### OBSERVERS ### MJI, YK ### WEATHER ### Clear, Hot day ### LOCATION ### SUSI ### PROGRAM ### More MUSCA. ### SIDEROSTATS ### n1 s2 ### TARGETS ### HR 1713 (bet Ori, fringe-finder. Fringes at -690. Poor seeing: Rat=0.3 during Lock, aoffset=-1) Dataset 1: Unpolarized light. (large gap due to N1 bugshooting) Dataset A: Polarizer at 270 degrees. Dataset B: Polarizer at 315 degrees (22:55 local, peak software V^2 = 0.36) Dataset C: Polarizer at 0 degrees (peak V^2 = 0.5 but only once) Dataset D: Polarizer at 45 degrees (23:03 local) Dataset E: Polarizer at 90 degrees (peak V^2 = 0.63) Dataset F: Polarizer at 135 degrees (peak V^2 = 0.65) Dataset G: Polarizer at 180 degrees (peak V^2 = 0.74. Seeing now good. pity HIP9487 has set) Dataset H: Polarizer at 215 degrees (peak V^2 = 0.8) *** HIP 9487 while setting *** HR 596. Fringes at -850. HR 811. Fringes at -550. A long delay and not a great cal, but at least it's something. *** MUSCA *** HR 1713. HR 1852 HR 3485 (in the South, after aligning LEDs) north offsets: -260 and -86. A big spiral... It turned out that this is a near-equal binary, and hints of fringes were found in the right place, but no real locks. ### QUALITY ### Average ### PROBLEMS ### N1 encoder problems... This time we were seeing evidence that one of the quadrature signals was not getting read by the ARK, even though we could trace the signals right to the ARK. After opening up the ARK (and maybe the temperature decreasing?) the signals were being read just fine.