CCD Observations Object YYYYMMDD(UT) Mag Obs Chart Remarks SERX 20180221.432 16.95V MRV AAVSO AAVSONET SRO-50; Err 0.10; light clouds Instrument: 50.0 cm f/4 Newtonian (SRO-50) Observer: Robert J. Modic (MRV), AAVSO