Hello, 1)Measurements out of V and R given in the " vsnet-obs 24615 " were made on images treated by wavelets to try to remove the bottom of galaxy. Sequence vsnet-2389 de Arcne et henden. SN1999em 991101.105 14.38V SN1999em 991101.112 14.18Rc SN1999em 991104.041 14.24Rc SN1999em 991104.051 14.65V SN1999em 991105.089 14.25Rc SN1999em 991105.108 14.45V SN1999em 991110.093 14.22Rc SN1999em 991110.124 14.50V S7E+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)] Software Prism-Atlas-Pises. Measure by "modelisation Gaussienne" 2)Veiled the results of the estimates magnitude on the same images, but untreated by Wavelets. SN1999em 991101.105 13.85V SN1999em 991101.112 13.58Rc SN1999em 991104.041 13.62Rc SN1999em 991104.051 13.94V SN1999em 991105.089 13.60Rc SN1999em 991105.108 13.87V SN1999em 991110.093 13.54Rc SN1999em 991110.124 13.85V These measurements is closer to those published in the " vsnet-obs 24628 SN dated (Krisciunas) " Of or my questions 1)y does it have a specific treatment to decrease the influence of the galaxy on SN? 2)What is the method of measurement adapted to SN? aperture photometry? Thank you for your councils for better taking part in measurements of SN Sincerely Yours, Jean Marie Llapasset Obs 635 Perpignan (France) http://perso.wanadoo.fr/jm.llapasset/ http://aude.geoman.net/observation/SN/sn.html Jean Marie Llapasset Obs 635 Perpignan (France) http://perso.wanadoo.fr/jm.llapasset/ http://aude.geoman.net/observation/SN/sn.html