From: Rahman Amanullah (rahman@physto.se)
Date: Mon Nov 01 2004 - 02:19:52 PST
On Thu, 21 Oct 2004, Chris Lidman wrote:
> I have a request for you. I have reduced the SOFI IR data on SN 1999Q,
> an unusual SN from the Reiss et al. 2000 paper. I'm finding that this SN
> is much brighter than that published by Reiss et al. Can I ask you to do
> an independent measurement of the magnitude.
Hello Chris, I am not quite sure how you wanted us to check this, but we
have done a PSF fit to the image that you provided, and we measure the
magnitude to be about J = 22.62 +/- 0.13. This, assuming that exposure
time and everything else is included in the zero point that you gave us.
Subtracting the fitted PSF gives a very clean subtraction.
Cheers,
Rahman & Vallery
__________________________________________________________
Rahman Amanullah, +46 8 553 786 61
Stockholm University ICQ: 62860758
Stockholm Centre for Physics, 17d 50m E
Astronomy & Biotechnology 59d 26m N
http://www.physto.se/~rahman/rahman-public.gpg
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