Christian Froeschlin <chr### [at] chrfrde> wrote:
> For precise temperature determination a spectrum is better.
> But B-V can be determined easily for thousands of stars at once, even
> faint ones a thus yields large datasets for statistical analysis.

If I had a spectrum, I could go directly to color; I wouldn't need temperature
as a proxy.

However, aside from full spectral data being less available, I'm not sure it
would get me better results for ray tracing purposes, as it would disregard the
interstellar extinction effects.

A direct spectrum would be best if I were doing a portrait of a single star.  It
would also get me accurate colors for carbon stars, which, you might remember
from an earlier post, turned out hot pink when I used a B-V-to-temperature
correlation.

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