Estimate magnitude CCD-C (AUDE) SN2001B 20010121.828 150CR LLA Observer: Jean Marie Llapasset (LLA): Observatory 635 Perpignan (France);C11;ech=2"/pixel;ST7E;filters Shott; software PRiSM; Comparison comparison with stars U138 et U139 (Image of O.Trondal) Image at: http://aude.geoman.net/observation/SN/images/S01BLL2.jpg Jean Marie Llapasset Obs 635 Perpignan (France) jean-marie.llapasset@wanadoo.fr http://perso.wanadoo.fr/jm.llapasset/ http://aude.geoman.net/observation/SN/sn.html