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pleco
SFN Addict
USA
2998 Posts |
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H. Humbert
SFN Die Hard
USA
4574 Posts |
 Posted - 07/09/2005 : 13:12:34 [Permalink]
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quote:
Originally posted by pleco
http://www.libertythink.com/totalinformation/BlueMars.htm
Enjoy! 
I swear this was a topic once, right down to some jokes about the "golf ball" image on the bottom of that link. (Or am I just having a really bad case of deja vu?) The answer, if I remember right, was NASA is changing images--but in order to correct them, not disguise them.
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"A man is his own easiest dupe, for what he wishes to be true he generally believes to be true." --Demosthenes
"The first principle is that you must not fool yourself - and you are the easiest person to fool." --Richard P. Feynman
"Face facts with dignity." --found inside a fortune cookie |
| Edited by - H. Humbert on 07/09/2005 13:13:03 |
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pleco
SFN Addict
USA
2998 Posts |
Posted - 07/09/2005 : 13:13:17 [Permalink]
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| I admit I didn't do a search, so I apologize if this has been posted before. |
by Filthy
The neo-con methane machine will soon be running at full fart. |
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dv82matt
SFN Regular
760 Posts |
Posted - 07/09/2005 : 21:20:40 [Permalink]
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For the answer see, NASA Is Not Altering Mars Colors.quote:
The answer is that the color chips on the sundial have different colors in the near-infrared range of Pancam filters. For example, the blue chip is dark near 600 nm, where humans see red light, but is especially bright at 750 nm, which is used as "red" for many Pancam images. So it appears pink in RGB composites.
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chaloobi
SFN Regular
1620 Posts |
Posted - 07/12/2005 : 11:05:16 [Permalink]
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| NASA uses false color all the time to highlight features. Often pics don't even get taken in real color and have to be altered to their best guess as to what the scene might look like to the human eye. This is no secret either; most pics they post have their color discussed - whether it's false or been altered to a more natural state. |
-Chaloobi
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| Edited by - chaloobi on 07/12/2005 11:06:23 |
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BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 07/12/2005 : 12:14:58 [Permalink]
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| Many of the best images are composites of non-visible and visible light, non-visible of course needs tuning so that it can be interpreted by our brains. |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
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