The Stain - Page 6

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Joe Smith


Posts: 86

Reply: 101



PostPosted: January 12, 2011 9:45 AM 

Ahh,,,,and at the lower edge of the hinge as well,,,don't quite know what to make of this,,,it is repeating itself,as Kye stated,,Psyche,,you have been a Blessing!to this group,Thank you for sharing your talent.
Joe in Texas

Psych Author Profile Page



Posts: no

Reply: 102



PostPosted: January 22, 2011 5:05 PM 

Here is an image I missed due to looking only at the left hand color images. It is a right hand false color from filters 2 and 1, 2 for the red and 1 for both blue and green. It is also composed from NASA calibrated images. This image is from Sol 1621, the first time the 'stain' appears at the rear of the sundial. I never knew it extended so far to the left of the sundial.

hortonheardawho


Posts: 3465

Reply: 103



PostPosted: January 26, 2011 11:01 AM 

sol 2487-2490 animation of the changes to the sundial stain:

The appearance of the "blue" spot is new. It may be the fabled "clean deck" under the dark "stain" material.

If so, perhaps the "stain" cleaned the deck by a uniquely Martian process?

I may need a small vacation from Mars as I see in my mind the whos gleefully running free about the deck.

Barsoomer


Posts: 344

Reply: 104



PostPosted: January 26, 2011 11:09 AM 

Re 103: There seems to be a similar blue spot on the ball of the gnomon.

hortonheardawho


Posts: 3465

Reply: 105



PostPosted: January 26, 2011 12:04 PM 

Yes, the similarity of the "blue" spot of the stain and several areas on the ball of the gnomon "holds up" even in saturated infrared / visible false color comparisons.

The saturated false color infrared JPG image is quite awful, so I will wait until the original 12 bit data is available before positing such an image.

My guess is the same black paint was used to paint the gnomon and the deck and we are now seeing a small spot of the cleaned deck peeking through the stain - proving - again - that the stain is not clean deck.

But also opening up a totally new problem:

If the changes in the stain area is wind driven then why didn't a wind gust that was strong enough to completely clean the "blue" area disturb any of the the more mobile "red" dust on the deck?

Perhaps there was a "cleaning" event between sol 2487 and sol 2490? Perhaps we will read about it in the weekly operations summary?

Barsoomer


Posts: 344

Reply: 106



PostPosted: January 26, 2011 3:49 PM 

If the stain is biological, the explanation might be that the stain has finished consuming the red dust in that area, and has withered away there.

Barsoomer


Posts: 344

Reply: 107



PostPosted: January 26, 2011 4:11 PM 

Looks like a continuation of the "withering" on Sol 2491.

hortonheardawho


Posts: 3465

Reply: 108



PostPosted: January 26, 2011 4:50 PM 

sol 2485-2491 ( Jan 21-26, 2011 ) soil and stain changes:

looks like there is a wind a blowin' out'a da' crater.

LWS


Posts: 3062

Reply: 109



PostPosted: January 26, 2011 6:34 PM 

Hort; The changes in the soil seem to be confined to the area of the wheel tracks. Why would it have to be wind? Why not settling of the type seen at Purgatory?

By the way, Nice image!

Winston

Fred


Posts: 73

Reply: 110



PostPosted: January 27, 2011 11:22 AM 

Yep, dem winds, she will a blow from time to time.

Arrrg,

Fred

ben


Posts: 2270

Reply: 111



PostPosted: January 27, 2011 12:36 PM 

The changes are confined to the wheel tracks because the thin crust has been disturbed here;freeing up particles which can then be moved by wind.

Stan


Posts: 14

Reply: 112



PostPosted: January 27, 2011 1:13 PM 

I actually don't see any changes to the wheel tracks. I think it is an optical illusion. I see darkening due to angle of the sun. When I look very carefully at both pics, the height of the tracks seem to be about the same.
The elephant in the room for me has always been the rover tracks. How do they get made and stay in place with no liquid to hold them there.

Stan

LWS


Posts: 3062

Reply: 113



PostPosted: January 27, 2011 4:24 PM 

Stan; I looked carefully too and I think there are a few places at the edges of the tracks where there seems to be minor differences, not related to different lighting.

I agree with you re. the stability and conformation of the tracks, especially as seen in the Purgatory event. I still think there is moisture in those tracks and that the numerous images that suggest mud and cohesion are real.

Of course, if they would deign to post on this thread, the rock guys would tell us that all is explained by the magical properties of the "fines" and that I am delusional.

Winston

Stan


Posts: 14

Reply: 114



PostPosted: January 27, 2011 9:33 PM 

Winston,
I have mentioned this before but it is a good time to bring it up again. I actually asked Steve Squyres directly face to face about the rover tracks, and dirt sticking to the rover wheels. He told me that he thought it was caused by tiny amounts of water coming up from below the ground.
So I can't help but wonder if the rock guys would think that Steve Squyres is "delusional".

Stan

Psych Author Profile Page



Posts: no

Reply: 115



PostPosted: January 27, 2011 10:00 PM 

Full deck pan coming down on Sol 2492, looks like just Ls and Rs.

Psych Author Profile Page



Posts: no

Reply: 116



PostPosted: January 27, 2011 10:20 PM 

from the Nav...

Mizar


Posts: 692

Reply: 117



PostPosted: January 28, 2011 4:35 PM 

LWS,

Talking about Purgatory, this is a snapshot from one event...

Sticky, oh yes Lyal...

Psych Author Profile Page



Posts: no

Reply: 118



PostPosted: January 28, 2011 7:52 PM 

@Mizar ^^^, extremely cohesive it would appear. Much like the little nob of dust in the center of the current RAT brushing at 'Luis de Torres. See my 329 over on page 17 of the Santa Maria Thread

Psych Author Profile Page



Posts: no

Reply: 119



PostPosted: January 28, 2011 7:53 PM 

Does not even like me linking back to this forum Shocked

Stan


Posts: 14

Reply: 120



PostPosted: January 28, 2011 8:49 PM 

I've been alive over 50 years. I've lived in the hills of West Virginia for over 30 years. I know what mud caked wheels look like. I've seen them here on Earth more times than I can count. And at this point, I've seen them on Mars more times than I can count. Nobody is going to tell me with a straight face that the picture in reply 117 is not a muddy wheel.

Stan

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