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[vsnet-chat 5970] Re: Crude USNO B1.0 B1-R1 to B-V transformation
- Date: Mon, 10 Feb 2003 12:56:57 -0700 (MST)
- To: linnolt@hawaii.edu
- From: Brian Skiff <Brian.Skiff@lowell.edu>
- Subject: [vsnet-chat 5970] Re: Crude USNO B1.0 B1-R1 to B-V transformation
- Cc: vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp
- Delivered-To: vsnet-chat-archive@ooruri.kusastro.kyoto-u.ac.jp
- Delivered-To: vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp
- Sender: owner-vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp
>> ...that regression line is Ok, but not so good even at 0.96285...,
>> I can imagine how poor it must be for the USNO-B1 at 0.59...
I think most statistical types would agree that correlation coefficients
circa 0.6 are not especially compelling, and that 0.95-plus is much more
comforting (even 0.95 to 0.99 makes a big difference). The low values John G
got seem to come largely from the very soft photometry in B1.0. The
correction is enough to separate very blue, intermediate-color, and quite red
stars, but that's about it.
\Brian
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