CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code UMACY 20090402.57769 13.57C Ioh.VSOLJ SDSSJ152419.33+220920.0 20090402.73337 16.13C Ioh.VSOLJ Observer: H. Itoh (Tokyo, Japan) Instruments: 30cmSCT + DSI-II + No filter