[vsnet-obs 20582] Re: SN 1999by pre-visible image

[dbishop@kodak.com (David Bishop)]

Stan Moore <Stanleymm@aol.com> wrote:

> << Nice image, but the SN isn't visible in it. Yours is the third image of 
> this galaxy people have sent me to look for "pre discovery" images.  This SN 
> looks about mag 19 on 4/25.  What would you say your limiting magnitude was 
> on this image? >>
> 
> Of course the SN isn't visible.  I thought you might be interested in it for 
> that very reason.  The limiting mag is 20 +-0.5 (it'a an unfiltered image and 
> there are few refererence stars), taken 4/18/99 5 hrs UT.

That means that the SN was <20.0 on 4/18.208/99 UT.  Thus

SN1999by 19990418.208 <20.0 SM

I'll forward this observation on to VSNet.  Thanks, that's why I asked
the question.

NAME:     David W. Bishop           INTERNET: dbishop@vhdl.org  (  \  )
US MAIL:  Hilton NY 14468-9101      A Long time ago,             \__\/
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For Supernova info:  http://vsnet.ggw.org/asras/snimages            | |
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