Comparison star: GSC6206.372 162227.64 -174857.5 (2000.0) 13.67 0 GSC6206.372 162227.66 -174856.9 (2000.0) 13.73 0 USNO0675.10698092 162227.652 -174857.02 (2000.0) 12.3 15.0 USNO r mag 12.3 assumed. Unfiltered CCD magnitudes: SCOU 990227.704 9.93C Oud SCOU 990227.740 9.88C Oud SCOU 990227.759 9.90C Oud SCOU 990227.780 9.87C Oud SCOU 990227.796 9.86C Oud SCOU 990227.818 9.88C Oud SCOU 990227.855 9.87C Oud cloud interruptions. observer: Ouda team (K. Matsumoto and T. Kato) telescope: Ouda team rooftop station, 25-cm SCT + ST-7 unfiltered through a objective grism