CCD Observations Object YYYYMMDD(UT) Mag Obs Chart Remarks SERX 20210727.952 16.80V MRV Henden COAST; Err 0.07 SERX 20210813.922 14.85V MRV Henden COAST; Err 0.05; Outburst Instruments: 43.2 cm f/6.8 CDK, Open University (COAST) Observer: Robert J. Modic (MRV)