From: Saul Perlmutter (saul@lbl.gov)
Date: Fri Feb 28 2003 - 11:09:21 PST
...Also remember that they didn't always (usually?) succeed in fine-tuning
which filter they would use for a given supernova, because they didn't know
what redshift they were until after the photometry started -- so they often
had to just guess that they were at z=0.45. This is why I think you will
find that they were mostly just using B45 (at the telescopes that had it) and
R (at telescopes without B45).
Alex Conley wrote:
> They have 4 special purpose filters: B35,V35, B45, and V45.
> They are essentially z=0.35 redshifted B and V and z=0.45 redshifted
> B and V. They used their special purpose filters on some telescopes
> (ESO NTT, LCO2.4m for example) but not on others (KPNO4m, ESO3.6m).
>
> Filter sensitivity curves are provided in Schmidt et al.,
> astro-ph/9805200. However, we do not have the detector response functions
> for the cameras they used, so will be forced to assume that they are flat.
>
> Alex
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