[vsnet-chat 5952] (fwd) Re: [AAVSO-DIS] Why Aren't Arne's Sequences Solid Gold?

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

(fwd) Re: [AAVSO-DIS] Why Aren't Arne's Sequences Solid Gold?

  Message relayed from Tom Droege:

Date: Tue, 04 Feb 2003 14:57:31 -0600
From: Tom Droege <tdroege2@earthlink.net>
Subject: Re: [AAVSO-DIS] Why Aren't Arne's Sequences Solid Gold?

Kato San,

I don't see much difference in what you say and what I say 
below.  Complexity includes everything, I think.  Transforming with widely 
different color sequences is more complex in my thinking than comparing 
something quite similar.  Possibly there is a better word to use than 
complexity.  I cannot think of anything better at the moment.  So it is 
easier to believe a measurement done by a simple transformation from very 
similar sequences than a measurement that is made from data far from the 
sequence.  That is what I was trying to say.  I think not too badly.

Tom Droege

At 02:25 PM 2/4/03 +0900, you wrote:
> > The closer you (in complexity of the transformation) can make the
> > measurement to the accepted standard, then the easier it will be for
> > someone to accept it.
>
>    Complexity of the transformation is not always a good indicator of
>the better approximation of the standard system.  Even with any degree
>of complexity, one can not make transformations between systems with
>very different passbands.  In attempting to make standard photometry,
>design as close passbands as possible as the originally defined ones,
>rather than to numerically transform measurements.
>
>Regards,
>Taichi Kato

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