Re: [APML] Colors on the Moon II - More detailed results

[Larry McManus <lmcmanus@clearpointadv.com>]

Chris

According to the article moon material that has not been exposed to the
elements has a blue tint and the material that has been exposed to the
elements has a red tint. The color photos taken by the astronauts, that have
a color wheel for correction in the photo, the scene is grayish. With that
information I think any color seen on the moon would be very subtile. I
think a good test for your correction method would be to take a photo of
something that is neutral and something that has agreed on color and put
your correction on it and see if it distorts the color.

Larry 


on 2/24/03 3:31 PM, cschur@cybertrails.com at cschur@cybertrails.com wrote:

> Larry, The purples and greens are not quite right I agree.  But the blues
> and ruddy colors agree perfectly with both color geologic Clementine
> images, nasa photos and tri color tech pan shots by others.  For example,
> the imbrium basin has a bluish interior, and a reddish lava flow over it.
> But the greens around the edges are artifacts of probably some sort of
> chromatic vignetting in my optics.  So are the purples.  I wanted to post
> these results, which are preliminary experiments to encourage others that
> there MIGHT be some color gradients that indicate geologic activity worth
> persuing, and they can try thier hand at it as well.  For web publication,
> the colors came out a bit deeper than I wanted, but just to make a point,
> they are adjusted more saturated.  We first started seeing color in live
> web cam images about two months ago, in the same areas, such as
> Aristarchus and Imbrium.
> 
> Chris Schur
> 
>> Gene
>> 
>> Yes you are right go to http://www.jpl.nasa.gov/releases/2003/23.cfm to
>> see the article. Lunar soil under the surface has a bluish tint and
>> weathered soil (from the Suns energy) has a slight redish tint. Since
>> meteor impacts on the moon are a rarity It would be difficult to find
>> any large areas of bluish new soil when photographing the moon. The
>> colors I see on Chris's image were very dramatic purples, reds and dark
>> blues. These colors are not correct and have been over processed in
>> photoshop.
>> 
>> Larry
>> 
>> 
>> on 2/24/03 1:51 PM, Gene Horr at genehorr@houston.rr.com wrote:
>> 
>>> I don't remember whether anyone mentioned this last week, but there
>>> was a notice put out by NASA that a 50(?) year old photo allegedly of
>>> a meteor strike on the moon was just confirmed to be legitimate. The
>>> confirmation was determined by colour examination of the area. The
>>> area was "blue", which indicates recent activity.  Apparently the
>>> underlying materials have a natural blue colour but exposure to
>>> sunlight causes a greying.
>>> 
>>> The confirmation came from finding a "blue" crator in the same
>>> spot as the photograph and the crator size was the same size as
>>> what the estimated explosion would have been from the original
>>> photograph.
>>> 
>>> So at least according to NASA there is colour.
>>> 
>>> Gene Horr
>>> genehorr@houston.rr.com
>>> 
>>> 
>>> _______________________________________________
>>> Astro-Photo mailing list
>>> Astro-Photo@seds.org
>>> http://seds.org/mailman/listinfo/astro-photo
>>> 
>> 
>> _______________________________________________
>> Astro-Photo mailing list
>> Astro-Photo@seds.org
>> http://seds.org/mailman/listinfo/astro-photo
> 
> 
> 
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo
> 

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo