[vsnet-chat 1852] Re: Chart of SN1999by

[bas@lowell.Lowell.Edu (Brian Skiff)]

     The BVRI photometry by Corwin & Frueh was done with a traditional
single-channel photometer during the course of aperture photometry of the
galaxy itself (e.g. 1996 AJ 111,722).  Although great care would have been
taken to compensate for the galaxian background light, this method is not
perfect.  A strongly varying background is better taken out when using a CCD,
so we might expect that later some observers will be able to improve on the
original numbers.

\Brian

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