From: Robert A. Knop Jr. (robert.a.knop@vanderbilt.edu)
Date: Mon Apr 05 2004 - 19:03:35 PDT
On Mon, Apr 05, 2004 at 06:54:48PM -0700, Greg Aldering wrote:
>
> Hi Rob,
>
> The 0.6 aperture correction error you just told Adam about - was it a
> programming bug or related to work by hand?
It was a think-o.
I basically was proceeding with the way we've always done it-- use the
things that our software identifies as "stars", and integrate on them to
get an aperture correction.
Of course, there are *no* stars (basically) on the ACS fields, so it
identified various other things as stars. In other words, by doing
things as we always have done it, we did things wrong. My screwup.
That 0.6 I said-- that was just in the one I checked. They are actually
all over the map, but generally our candidates are going to be too
bright. Our colors are all screwed too. I will put out corrections
that will need to be applied on a field-by-field basis.
-Rob
-- --Prof. Robert Knop Department of Physics & Astronomy, Vanderbilt University robert.a.knop@vanderbilt.edu
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