[vsnet-chat 2410] [vsnet-chat] SN

["Jean marie Llapasset" <jean-marie.llapasset@wanadoo.fr>]

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

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