Article View: sci.astro
Article #4165STARS and color
From: Richard W. Webb
Date: Mon, 28 Nov 1988 23:40
Date: Mon, 28 Nov 1988 23:40
28 lines
1900 bytes
1900 bytes
Greeting, Greeting, Star Buffs,
We all know about the Main Sequence, and how different stars
have different colors. What I would like to know is this:
What RGB (red, green, blue) intensity values should I use for
a star of a given spectral class?
O stars are "blue-white" while M stars are "reddish." I would
like to be a bit more precise than this. Possibly, I could
guess at a mapping from spectral class to temperature, and then use
the blackbody color curve (CIE chromaticity as a function of
temperature) to produce a color for each spectral type. I would
much rather lookup in a table the RGB values for each spectral type.
If anyone has done something like this and can send me a table like
this, I would greatly appreciate it. However, any pointers or
references to similar material would also be appreciated.
Please Email, I will post a summary of the responses. I am
doing this for my own modification to the "starchart" program that
was made available a few months ago.
Thank you very much for any help you can provide.
--
Richard W. Webb ecvax!decwrl!borealis!\
ESL Inc. MS/302 sdcsvax!seismo!- ames!esl!rww
495 Java Drive (408) 738-2888 x5729 ucbcad!ucbvax!/ /
Sunnyvale, CA 94088 SMAIL: rww@esl.ESL.COM ihnp4!lll-lcc!
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!pacbell!ames!amdahl!pyramid!leadsv!esl!rww From: rww@esl.UUCP (Richard W. Webb) Newsgroups: sci.astro,sci.space,comp.graphics Subject: STARS and color Summary: What colors are they? Keywords: stars, spectral class, color Message-ID: <797@esl.UUCP> Date: 28 Nov 88 23:40:09 GMT References: <1287@cfa.cfa.harvard.EDU] <17459@agate.BERKELEY.EDU> Reply-To: rww@esl.UUCP (Richard W. Webb) Organization: ESL, Inc., Sunnyvale, CA. Lines: 28