Estimates magnitude CCD-C (AUDE) Comparison stars sequence vsnet-2389 (Arcne et henden) SN1999em 991101.105 14.38V JM Llapasset SN1999em 991101.112 14.18Rc JM Llapasset SN1999em 991104.041 14.24Rc JM Llapasset SN1999em 991104.051 14.65V JM Llapasset SN1999em 991105.089 14.25Rc JM Llapasset SN1999em 991105.108 14.45V JM Llapasset SN1999em 991110.093 14.22Rc JM Llapasset SN1999em 991110.124 14.50V JM Llapasset Observer:JM Llapasset: st7E+c11 at f/d 3.3; Filters V = schott V [GG495 (2 mm) + BG18 (1mm) + WG305 (1mm)] R = Schott R [R : OG570 (2 mm) + KG3 (2 mm)] The images are treated by Ondelettes. Jean Marie Llapasset Obs 635 Perpignan (France) http://perso.wanadoo.fr/jm.llapasset/ http://aude.geoman.net/observation/SN/sn.html