From: Saul Perlmutter (saul@lbl.gov)
Date: Tue Nov 05 2002 - 00:51:46 PST
The listed magnitudes in sntrak are i'_AB for this run. We don't yet know
how uncertain these numbers are in their zeropoint, but you can estimate
their photometric uncertainty from their Ap.Sig.
--Saul
Ariel Goobar wrote:
> Hi Greg,
> Are the listed magnitudes in the Vega system or AB ? What is the
> kind of uncertainty you expect on the numbers?
>
> Ariel
>
> On Tue, 5 Nov 2002, Greg Aldering wrote:
>
> >
> > Just an update: I have slogged through about 1/2 of the suspect
> > candidates (all of those found before about 6 pm tonight) and assigned
> > them qualities and priorities in SNTRAK. In addition, the high-quality
> > candidates from that time period have also been updated in SNTRAK
> > (these are the ones that Andy has made finders for and that Rachel is
> > checking guide stars for). In all, about 30 candidates have now been
> > prioritized. (This total doesn't count the dozen or so mangled ref
> > examples that I saved - these have had their priorities set to -1 and
> > so you shouldn't see them anymore.)
> >
> > The way to tell whether a candidate has been prioritized is to see if
> > its priority has a value other than 2. Note that there are still
> > many (~24 right now) candidates yet to be prioritized.
> >
> > - Greg
> >
>
> --
> ___________________________________________________________________
> Ariel Goobar (ariel@physto.se)
> FYSIKUM, Stockholm University
> Stockholm Center for Physics, Astronomy & Biotechnology
> tel: +46 8 55378659
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