Do we have any more examples of Adam's I band magnitudes? This is a little too close to...

From: Saul Perlmutter (saul@lbl.gov)
Date: Mon Apr 05 2004 - 21:30:52 PDT

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    Does anybody have any more examples of Adam's I band magnitudes? This
    I band difference between us and Adam for the two examples shown is a
    little too close to the difference between Type Ia and II for comfort.

    Greg Aldering wrote:

    >Vitaliy and I looked at whether the zeropoint corrections just sent
    >by Rob bring our photometry into agreement with that of Adam. Here
    >is a comparison table
    >
    > Zorig Zapcor Zcorr ZAdam Diff | Iorig Iapcor Icorr IAdam Diff
    > ----------------------------------------------------------------------------
    > -076 24.52 0.57 25.09 25.1 0.0 | 25.96 0.59 26.55 26.8 -0.3
    > -177 24.61 0.81 25.42 25.2 0.2 | 25.52 0.72 26.24 26.65 -0.41
    > -096 24.90 0.73 25.63 25.5 0.1 |
    >
    >Look at the "Diff" columns; the corrections look good in Z-band. In
    >I-band there is still a hint of a systematic (note the I-band magnitude
    >uncertainties are 0.2-0.3 mag, so this is just a hint).
    >
    >- G & V
    >
    >

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