Revealed for the First Time Color Images of the Moon from Clementine Satellite, page 6
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reply posted on 16-12-2006 @ 04:27 PM by Saviour Of The Real
For a better understanding of natural vs. true vs. false color images please review the information and images at this link…

CLEMENTINE VIEW OF THE APOLLO 16 LANDING SITE

www.lpi.usra.edu...

"The Moon's natural color is a faint red/brown. The blue tint seen in the Descartes mountains is the result of fresh ejecta from the crater Dollond E. Fresh crater ejecta is typically blue because it has not hand enough time to develop large amounts of iron-rich, red glass (agglutinates)"

Also note this description here…

www.lpi.usra.edu...

Clementine's imaging cameras are similar to LANDSAT multispectral data for Earth. Both measure reflected solar radiation, and both acquire data through several different bandpasses (filters). Each bandpass was carefully selected to cover parts of the spectrum for which surface materials exhibit known variations. In the case of Clementine, filters were assigned to observe areas in the visible and near-infrared spectrum that are sensitive to variations in bulk mineralogy (principally the abundance of iron-bearing silicates) and the cumulative amount of soil maturity.

Here’s the 11 spectral bands that Clemetine’s cameras covered…



Note that the images on the PDS MAP-A-PLANET present images that include FIVE of these spectral bands (not THREE as in the nearly “true” color RGB image at the above link) when you select the “Abledo (Natural Color)” option data set…

pdsmaps.wr.usgs.gov...

Clementine UltraViolet-Visible (UVVIS) 5-band Mosaic This multi-spectral lunar DIM is a radiometrically and geometrically controlled, photometrically modeled global image mosaic compiled using more than 400,000 images from multiple filter observations of the Ultraviolet/Visible (UVVIS) camera onboard the Clementine Spacecraft. The DIM mosaic is mapped in the Sinusoidal Equal-Area projection at a resolution of 100 meters per pixel. Five spectral bands are presented at 415, 750, 900, 950, 1000 nm wavelengths.

This is NOT “true” color as it includes other filtered spectral bands normally not present in a typical "color" photo but by the same token it is NOT to be confused with the “false” color data set option described as follows…

The Clementine Ratio or Clementine false color views of the Moon are created by ratioing 3 of 5 UVVIS wavelengths and combining these into a red-green-blue color image: Red=750 nm/415 nm, Green=750 nm/950 nm, Blue=414 nm/750 nm. The color ratio rendition serves to cancel out the dominant brightness variations of the scene (controlled by albedo variations and topographic shading) and enhances color differences related to soil mineralogy and maturity. The lunar highlands, mostly old (~4.5 b.y.) gabbroic anorthosite rocks, are depicted in shades of red (old) and blue (younger). The lunar maria (~3.9 to ~1 b.y.), mostly iron-rich basaltic materials of variable titanium contents, are portrayed in shades of yellow/orange (iron-rich, low titanium) and blue (iron-rich, higher titanium). Superimposed on and intermingled with these basic units are materials from basins and craters of various ages, ranging from the dark reds and blues of ancient basins to the bright blue crater rays of younger craters.

Also, somebody asked about what Copernicus crater looks like using The PDS site. To find it go to the “Advanced” page here…

pdsmaps.wr.usgs.gov...

Just enter a CENTER LONGITUDE of 9.7 degrees and a CENTER LONGITUDE of (minus) -20 degrees, click “SUBMIT” and VIOLA!

Anway, I hope that helps clear up some of the confusion. Thie point is this is not your father's 35mm camera.



reply posted on 16-12-2006 @ 04:59 PM by zorgon
Originally posted by Saviour Of The Real
Anway, I hope that helps clear up some of the confusion. The point is this is not your father's 35mm camera.


Okay one last time on color... just so I understand this...

All the knowledge that NASA et al have in regards to image generation...

All the expensive and advanced cameras and other imaging equipment they have at their disposal.

All the high paid qualified image specialists they have in their employ...

Coupled with the basic knowledge any high school physics student or photographer has on combining red green and blue data to form a true color image...or TV and Computer technician for that matter... {the very screen you are seeing this on.. the image is generated by red green and blue pixels or "guns" adjusted to true color to our vision}

Edited to add... And so can any graphic artist or printing shop... Its just not that hard to do anymore

You are telling us that all this taken into account... NASA CAN NOT produce an image that is true color?

If thats true... its time to hire some new staff

You know the Mars Rovers have a little pad on them... its a color chart... so they can compare this to a matching one on Earth and produce true color images...

I suppose that is all nonsense as well?

Give me a break!! Now who is insulting NASA???



The image on the left is covered in dust. A dust devil blew off the dust and extended the life of the Rover Those little critters are like the Energizer Bunny... still going.....



[edit on 16-12-2006 by zorgon]



reply posted on 16-12-2006 @ 05:49 PM by zorgon
So back to the anomalies LOL

I am surprised no one has yet looked up that old faithful "Archology Row" area next to Ukert Crater using this imager... You know the square crater next to the triangular crater, Triesnecker pyramid... LA all that stuff? Well what the heck, lets go have a look...



Amazing!!! Can't see a thing! Seems to be covered up....

ban:



Sorry a weak moment... won't happen again



You will also notice the color of this area... which is basically drab brownish/grayish and its like this in much of the area of the moon even in these images Those beautiful color areas are not everywhere So I gues they did selective false color editing then? Sheesh

No "deception"... no "distortion" of the truth... we are simply showing you what is there... we didn't create these images... and I am sorry if what is in front of your eyes upsets you

[edit on 16-12-2006 by zorgon]


reply posted on 16-12-2006 @ 07:06 PM by ArMaP
Originally posted by zorgon
All the knowledge that NASA et al have in regards to image generation...

Like you told us, it wasn't a NASA mission, so NASA can not be the one to blame in this case.


Let me see if I can explain what I have understood about the colours.

This its what they say in the PDF on the link provided by zorgon:
The cameras were equipped with a set of special color filters selected to provide the maximum amount of information about the surface mineralogy of the Moon and Geographos. The images and other data returned from lunar mapping cover 100% of the Moon's surface at spatial resolutions that cannot be obtained from observatories on Earth.

Common rock-forming minerals on the Moon and in meteorites can be identified by color in the visible and infrared portion of the spectrum. Major silicate minerals can be recognized by their absorption of particular colors in the near-infrared from reflected sunlight (see Figure 4). Thus, rocks composed of various amounts of these minerals can be distinguished and mapped by means of the multispectral images taken with Clementine's cameras.
source

So, they didn't want to take photos with the colours we usually see, they wanted to see the Moon under those lights to spot specific differences between the different types of rock.

They also have an image showing the different wavelengths of various filters (the information its the same as that posted by Saviour Of The Real, only the image is different, and I think this is easier to understand).



As you can see, they could not have a Red, a Green and a Blue version of the images using those filters.

But they could create an almost normal image using the filters they had, as you can see in the following image, a composite image.




Originally posted by undo
No one has as yet told me what that fire thing is, or even bothered to address the anomalies. All I see is, critiques of the words used by the USGS. If you don't like their word usage, take it up with them.

I will not comment on things seen in those images that could have a different aspect with a different colour before I know if we are seeing or not the true colours, as a normal human being sees them.

And I am not criticising their words, I simply want to understand what are we talking about before starting to make conclusions, I could make conclusions based on wrong information.


PS: if we find these images, with a resolution of 100m per pixel, fantastic, imagine what those taken by the high-resolution camera are, with a resolution of 8m per pixel.

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