CCD Observations Object YYYYMMDD.DDD(UT) Mv Obs. Seq./Chart Remarks UMIZ 20070321.228 172V: MRV Henden Err 0.1 mag Instruments: 20.0 cm f/5 Newtonian w/ ST-7XME + V filter Temperature: -4C Observer: Robert J. Modic (MRV) AAVSO