Soil Scoop Zooms - Page 2

Bob, the scoop image of reply 54 is the bottom image of this montage of the scoop over the WCL ( Wet Chemistry Lab ) :

Technically. the image is a High Dynamic Range image that combines multiple exposure times.

This image is a combination of 4 shadow and one sunlit image.

The soil "on the edge" is really in a sunlit part of the scoop -- not drooping off the edge..

Ooops. Thats Bob's reply 20 -- not 54, Sometimes I should alow down to sub-sonic.

Thanks for that Horton.
Once again you're the man for the Phoenix imaging.

Bob Clark

Rosy Red Mars Soil:

Apparently the soil is close to the very tip of the scoop so the resolution is 30 microns / pixel -- better than I calculated and equivalent to the MER MI resolution! (

Plus, it's in glorious "Earth" color -- not "Mars" color!!

I laughed and laughed at the idea of "Earth" color!

Is a "flash" picture taken on Mars an "Earth" color picture?

Exactly what percent of the light in this picture is direct sunlight ( the same sunlight that illuminates the earth ) and what percent is from the indirect pinkish sky? ( Say them's pretty sharp shadows! )

Should all the nice shiney, new Earth stuff be tinted red to make it a "Mars color" picture?

Now consider this scene:

Again, exactly what percent of the light in this picture is direct sunlight ( the same sunlight that illuminates Mars ) and what percent is from the very blue sky?:

Since the Earth sky is blue, should all the rocks be blue, the sides of the building be blue, the trees be blue? Why not?

Think carefully about this.

Remember, the perception of color and the measuring of the frequency of electronagnetic radiation are related -- but NOT the same thing. Color trumps frequency.

BTW, I have applied a white balance to both of these pictures, so I guess that makes then both "wrong".

(* smack on the head*) Doh! I'm such a moron. From now on I will have to start coloring all my Earth pictures "Earth colors"...

Hort

I think what you are saying is exactly what I was saying all along about those official NASA and other monochrome pink pictures of Mars.

Winston

Here is my take on the NASA image of the soil in reply 24.

I downloaded the TIF version, cropped and resized 2X, and then applied a square root contrast stretch to highlight the shadow details.

Still looks weird to me. What did they call it? "fluffy"? I still see lots of "platelet" shapes interconneted with short fibers. But that's just my wild imagination...

Time to crash. It has been an exciting day.

In some newer images, dirt hangs from the edge of scoop, like if held by statics or magnetic forces. What is the material of scoop, anybody knows?

extrasense, see reply 21 for a discussion of the "hanging soil"... The illusion is due to an overexposure of the scoop front in sunlight.

Thanks, horton,

Is my impression now correct, that the black scoop has a metalic knife addition over its front edge? I did not notice it before.

es