Trek to Mount Sharp - Page 2

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hortonheardawho


Posts: 3465

Reply: 21



PostPosted: June 28, 2013 8:44 AM 

MPJ, here is an animation of both views of the shiny rock in reply 15:

The white areas look like specular reflections ( solar glints ).

MPJ


Posts: 250

Reply: 22



PostPosted: June 28, 2013 9:23 AM 

Horton, thanks for the wobble animation (my favorite 3d display variant)!

I wonder if a a wind polished calcite shell - or in specific skeletal remains of eg sand dollars would cause such kind of reflections- Generic calcite crystals are quite reflective so not much of a stretch i would say... Smile

Apply some polishing (gentle sand blasting) to this sand dollar skeleton:
http://lh3.ggpht.com/WTrAAk1LpinYvAuq3GEFXHZq3luMVVzB07fC7Z4FD9C480M8XiVEA_BFg4L9Mh8EfWkC9B_9HSBLH0Yx8nY1sg=s580

or this:

note the dark hole in the center of the first example which is visible on the shiny rock as well Rolling Eyes

Calcite should be highly detectable by ChemCam LIBS Wink

Wildcat


Posts: xxx

Reply: 23



PostPosted: June 28, 2013 2:12 PM 

Visually, it bears a similar shape to an iridescent ammonite fossil.

Highly unlikely that one would be sitting atop the ground just like that, of course.

hortonheardawho


Posts: 3465

Reply: 24



PostPosted: June 28, 2013 3:38 PM 

Sol 0315 Mastcam 3D pairs - natural, false and enhanced difference false color.

I HATE the new Flickr interface to photos.

The best way to use this set is click on the first and then click on the full screen icon and then use the left and right arrow keys to move through the set. The set is organized as natural, false and enhanced full frame triples - except for a few interesting details - such as these:


I selected these closeups because -- well because.

Time to check out the raw data again...

rpage


Posts: 655

Reply: 25



PostPosted: June 29, 2013 1:02 AM 

Reply 21 reminds me of naphthalene crystals. Maybe it's a semi-volatile organic compound....

hortonheardawho


Posts: 3465

Reply: 26



PostPosted: June 29, 2013 3:32 PM 

Sol 0317 false color panorama:

Mazebo


Posts: xxx

Reply: 27



PostPosted: June 30, 2013 2:21 PM 

Just took some time to go through images from some of the sols by the "Point Lake" Rock.
Here are a few more of the interesting fossil-like finds:

This, to me, is tantalizingly alike a fossil of a Cephalopod. The upper, left part is like the shell broken up in

half, lengthwise, and the right part could be an imprint of the soft tissue arms.


From the same Sol, 303, is this:

To the left we find a bell-like form. A fossil shell? A Head? Sure is looking quite un-geological to me anyway.

The right blow-up shows some kind of cell-like structures, organized in a spiral form. Geology?

hortonheardawho


Posts: 3465

Reply: 28



PostPosted: June 30, 2013 2:54 PM 

Sol 0306 enhanced difference false color crop of peculiar area on Point Lake:


The last two frames of the sol 306 Mastcam-100 pan were posted today.

The processing of the final enhanced difference false color panorama stretched my 14 year old system to its limits, taking over 2 hours of processing.

( I will post it as a gigapan later today. )

I am interested not only in recurring peculiar shapes but also recurring peculiar isolated colors. There are several along the edge of the rock.

Well worth examination of this area at 200%.

hortonheardawho


Posts: 3465

Reply: 29



PostPosted: July 1, 2013 12:54 PM 

Sol 0317 enhanced difference false color closeup of peculiar rocks:

with a location link to the complete panorama.

I call these rock shapes "Taco Mars" rocks. I don't have enough geological imagination to know how such a taco could be made. Is there a Taco Rock specialist in the house?

The location panorama is the complete pan of reply 26. Unfortunately, it is smaller than the 50 megapixel lower limit of gigapan so I can't download it there.

Barsoomer


Posts: 344

Reply: 30



PostPosted: July 2, 2013 12:28 AM 

Nice image, Horton, and very aptly named "taco rocks." The very flat horizontal sheet nearby also catches the eye.

wildcat


Posts: xxx

Reply: 31



PostPosted: July 2, 2013 12:46 AM 

SIAP... frost under the rock? Interesting white stuff...

hortonheardawho


Posts: 3465

Reply: 32



PostPosted: July 3, 2013 7:09 PM 

Sol 0322 MAHLI enhanced difference false color of the most boring rock in Gale crater:

with links to details, 3D and locations to the rock on sol 0317 and 0315.

I don't recognize the rock in any Chemcam shots - but I could have missed it.

So what's worth the delay in the trek to Mount Sharp in this rock? What am I missing?

Kevin


Posts: xxx

Reply: 33



PostPosted: July 4, 2013 5:16 AM 

#32 NASA clearly think we need to look at something featureless after weeks of seeing rocks with fossils in them. Just throwing us off the scent.

Loving your work as ever Hort!

hortonheardawho


Posts: 3465

Reply: 34



PostPosted: July 4, 2013 10:47 AM 

Sol 0323 MAHLI false color closeup of yet another rock:

with location links back to a map.

hortonheardawho


Posts: 3465

Reply: 35



PostPosted: July 4, 2013 3:24 PM 

Sol 0034 0322 animation of changes to the penny:

and sol 0036 0323 animation comparison of dust accumulation on the rover deck:

Sheesh. Why is the simple scientific principle of controlling the degrees of freedom ( like lighting ) ignored by the MSL team?

Does anyone know what the instrument in the second animation is?

hortonheardawho


Posts: 3465

Reply: 36



PostPosted: July 4, 2013 3:28 PM 

And here are some recent chemcam images.

LWS


Posts: xxx

Reply: 37



PostPosted: July 4, 2013 6:26 PM 

Hort; Nice animations. The second one (top right hand) seems to show either a breakdown of a sealant or the development of a white substance that is very reminiscent of the material in the veins. Wonder which it is!

Winston

Kevin


Posts: xxx

Reply: 38



PostPosted: July 5, 2013 5:13 AM 

#35 It is REMS which does a range of weather measurements the edges of those "portholes" are magnetic and deliberately attract martian dust which is also magnetic thus keeping it away from the main sensors.

I posted this link on The Stain thread a while back.

[link]

Scroll down and you will see the dust accumulation building up over the Sols.

hortonheardawho


Posts: 3465

Reply: 39



PostPosted: July 5, 2013 10:59 AM 

Thanks Kevin for the REMS sensor identification. I have added your link to the Flickr comments.

I have added some new photos to the sol 0223 MAHLI photos - including this curious one:

I had difficulty orienting these images until I realized some dark areas were not shadows - but patches of dark material.

BTW, Curiosity is on the move again:

backtracking and moving away from Mount Sharp???

Oppy's last drive was further than MSL's last 4 1/2 MONTHS of driving!! At this rate Oppy will have lapped Endeavour crater twice before Curiosity reaches the base of Mount Sharp - in about 16 years.

Mark Wilson


Posts: xxx

Reply: 40



PostPosted: July 5, 2013 4:29 PM 

We've been on Mars for nearly a year now, and MSL is back to the same spot it was in last year lol Shocked Shocked Sad

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