OBS: Miguel Rodriguez Marco TEL: 0.20-m f/8 Ritchey-Chretien + CCD CCD: QHY9 KAF-8300 Bessell-Cousins BVRI filters VPhot 3.1 AAVSO OBJECT DATE MAG +/- OBS CAT ------ ------------- ----- ---- --- --------------- BooTT 20140518.1348 <16.498CV 0.30 Mro AAVSO 7836AIG na MRK 421 20140517.9998 13.04V 0.11 Mro AAVSO 7796AKC na