The original page was written by Gregg Geist who among other things has a BS in astronomy from the University of Arizona. He noted on the table page: "Most of the data used to generate the table were gleaned from Kenneth R. Lang, Astrophysical Data: Planets and Stars (Springer-Verlag, 1992). Other information was derived directly from the H. R. diagrams produced by the Hipparcos Astrometry Mission and available at: http://astro.estec.esa.nl/Hipparcos/"
The page is fascinating because it shows what a "white sun" and a grey card would look like with normal human vision. I edited the table slightly and present a excerpt below:
| Spectral Type | Example Star |
Photo Color White Sun |
Photo Color Gray Card |
| G2 | Sun | a | |
| M7 | Proxima Centauri | ||
| K0 | Alpha Centauri B | ||
| G9 | |||
| G5 | |||
| G4 | |||
| G2 | Mu Velae B | ||
| G0 | Alpha Centauri A | ||
| F8 | |||
| F6 |
Now you have some idea what sunlight and grey might look like on another planet orbiting another star.
No comments:
Post a Comment
Comments are moderated. Be nice. Be respectful. If you can't be then go some place else.