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My camera has a choice of "white balance" settings. If I use "Sunlight"
on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. -- "Remember when teachers, public employees, Planned Parenthood, NPR and PBS crashed the stock market, wiped out half of our 401Ks, took trillions in TARP money, spilled oil in the Gulf of Mexico, gave themselves billions in bonuses, and paid no taxes? Yeah, me neither." |
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On 21/09/2012 08:39, Paul Ciszek wrote:
My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. Probably somewhere in between the two roughly speaking the colour of freshly cleaved basalt for the darkest of the light bits. If you really wind up the colour contrast/saturation in HSL space you can actually see very slight differences in lunar geology. http://www.mikeoates.org/mas/project...lour/intro.htm There is a better full colour version somewhere. -- Regards, Martin Brown |
#3
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"Paul Ciszek" wrote in message ...
My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. -- Colour is subjective and dependent on surrounding colour, as this image clearly shows. http://androcles01.pwp.blueyonder.co...e/illusion.JPG -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
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On Sep 21, 5:21*am, "Lord Androcles, Zeroth Earl of Medway"
wrote: "Paul Ciszek" wrote in ... My camera has a choice of "white balance" settings. *If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. *If I use "Auto", the moon appears nearly colorless. *The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. -- Colour is subjective and dependent on surrounding colour, as this image clearly shows. * *http://androcles01.pwp.blueyonder.co...e/illusion.JPG Orange and brown are the same color but with different saturations. This is a better illusion where blue and yellow are compared: http://lesswrong.com/lw/290/blue_and...inted_choices/ The phenomenon that leads to the illusion is called lateral inhibition. Rods and cones that receive, for example, green light send signals to adjoining rods and cones to respond less strongly to green light. This tends to increase perceived contrast and enhances the ability to distinguish slightly differing colors. |
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"Lord Androcles, Zeroth Earl of Medway" wrote in
: "Paul Ciszek" wrote in message ... My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. The color of Dutch Edammer cheese. As if you didn't know..... |
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"Sjouke Burry" s@b wrote in message .10...
"Lord Androcles, Zeroth Earl of Medway" wrote in : "Paul Ciszek" wrote in message ... My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. The color of Dutch Edammer cheese. As if you didn't know..... ========================================== Jerk Berry, there is NOTHING in the above that is attributable to me. Why have you addressed me in your inane and pointless remark? As if you knew anything... -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
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On 9/21/12 2:39 AM, Paul Ciszek wrote:
My camera has a choice of "white balance" settings. If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. If I use "Auto", the moon appears nearly colorless. The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. http://epod.usra.edu/blog/2011/05/tr...-the-moon.html Also here is an interesting article: http://www.colormoon.pt.to |
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On Sep 21, 9:18*am, Sam Wormley wrote:
On 9/21/12 2:39 AM, Paul Ciszek wrote: My camera has a choice of "white balance" settings. *If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. *If I use "Auto", the moon appears nearly colorless. *The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. * *http://epod.usra.edu/blog/2011/05/tr...-the-moon.html * *Also here is an interesting article: * * *http://www.colormoon.pt.to And yet your NASA/Apollo era found only a mostly monochromatic and inert moon that on average seemed to reflect at 64%. |
#9
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On 21 Sep., 09:39, (Paul Ciszek) wrote:
My camera has a choice of "white balance" settings. *If I use "Sunlight" on the assumption that the moon is a sunlight landscape, photos of the moon come out looking a little brownish. *If I use "Auto", the moon appears nearly colorless. *The former coloration is not implausible, but which is closer to the truth? Fortunately, I can make this decision retroactively for photos shot in RAW mode. I hope I can be forgiven for going ever so slightly off topic: I was shocked when I took Venus transit images with a new Canon Ixus digital compact when the Sun came out as brown as hens eggs! My relatively ancient Sony makes the Sun pink. In both cases I used the same old, Baader foil, full aperture filter. |
#10
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![]() In article , Chris.B wrote: I was shocked when I took Venus transit images with a new Canon Ixus digital compact when the Sun came out as brown as hens eggs! My relatively ancient Sony makes the Sun pink. In both cases I used the same old, Baader foil, full aperture filter. Even further off topic, is it true that you can get a colored glass "hydrogen alpha" filter that does not cost thousands of dollars, but has a wider FWHM that the serious ones? Where would I find one? When I try to search for one, I just find fractional angstrom filters that cost more than my car did new. -- "Remember when teachers, public employees, Planned Parenthood, NPR and PBS crashed the stock market, wiped out half of our 401Ks, took trillions in TARP money, spilled oil in the Gulf of Mexico, gave themselves billions in bonuses, and paid no taxes? Yeah, me neither." |
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