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Blue Sun On Mars
jmknapp
post Feb 11 2004, 03:47 PM
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...and other stupid sundial tricks.

Take a look at this NASA-calibrated sundial image:

http://tinyurl.com/create.php

Zoomed:



From that image the following RGB values are obtained:

Ambient light (direct + scattered): 200:210:207
Scattered light: 87:72:60
Sky color: 194:169:161

So the direct light (i.e., direct sunlight) would be 200:210:207 minus 87:72:60 = 113:138:147

Scaled to max brightness: 196:239:255 (Sun color)

Here's a graphic showing the sky color (194:169:161) vs. the sun color (196:239:255):



Who knew?

Joe


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djellison
post Feb 11 2004, 04:11 PM
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Well - it's very blue at sunset. Not sure on the maths of what you've done there but it wouldnt at all suprise me.

Doug
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