Good application of a circular panorama.

Compare with Phil's Cir_Pan of Mike's Sol-2710 Navcam pan:

http://www.unmannedspaceflight.com/index.p...st&id=25510

(in post http://www.unmannedspaceflight.com/index.p...st&p=178440 ) -- you can tell we are no longer on the side of a hill, and you can just make out "summit crater" to the NNE.

--Bill




EDIT: and with Phil's current circular pan two posts down: http://www.unmannedspaceflight.com/index.p...st&id=25663 . Same data, different perspectives.

I've got the point , thanks Fredk, this make sense now.

My version of mhoward's nice panorama in circular form.

Phil

Click to view attachment

I uploaded to the PhotoBucket site an index image of the area between Odyssey Crater and the "unnamed summit crater" in the CRISM clay area, in PNG format.

HiRISE image of part of Cape York, at Endeavour Crater.
Cropped, sharpened and enhanced and map oriented.
Covers MER traverse from Odyssey Crater to CRISM clay area

Image ESP_024015_1775 _RED

http://i142.photobucket.com/albums/r91/wil...maker_Ridge.png


Somewhat grainy-looking, but I've concluded that this is due to sub-pixel light spots and dark cobbles on the ground pushing the average pixel value up or down.

You can orient yourself using Tesheiner's Route Maps or with the Cir_Pans uploaded earlier.

--Bill

Do those rectangular features correspond to the clay signature?

Nope, just the foundation stones of the old fort.

Now we know where it landed after it was sent spinning.

Nice view from sol 2736 showing Odyssey ejecta, then Odyssey itself, then Spirit Point on CY, and finally the jumbled terrain we zoomed over on our way in...
Click to view attachment

Not seamless, but... (Sol 2736 "Kirkland Lake" red-cyan anaglyph)

Those 'rectangular lineations' look a lot like the cemented fractures in Gale Crater. Description of cemented fractures.



They don't say anything about clay in the image caption, but it is evidence of water. My guess the MER team will want to take a look at this feature; maybe Oppy will scoop MSL.

Anyway, I hope so too. Go Oppy, go!

Close, Dan, but I think this is more likely...

Click to view attachment

And the P2405 sequence images today from Sol -2739 named "Sutherland Knobbys" is to the southeast and shows just the edge of the rectangular lineations. They are still mostly hidden by the ridge.

http://qt.exploratorium.edu/mars/opportuni...G8P2405L2M1.JPG

and

http://qt.exploratorium.edu/mars/opportuni...G8P2405L2M1.JPG

"Sutherland Knobbys" is an interesting bit of Aussie history--

http://coalriver.wordpress.com/2011/08/18/...s-head-on-mars/


The prominent ridge in the second image is actually Sutherland Point in Botany Bay and Knobbys Head is behind it. Or so I think.

--Bill

Don't want to Tar dis thread but... I hope we can investigate those features ...

I'd say that pancam sequence is looking more S-SW, well away from the "lineations". But the lineations are just visible in the navcams, here:
Click to view attachment
Obviously we'll need pancams (or to drive closer!) to make out any detail.

May very well be-- my first thought on those was "cold water hydrothermal cementation along fractures", which is another way of saying "mineral-saturated groundwater once filled the fractures. The water deposited minerals on both sides of the opening". There have been several suggestions of "cold water hydrothermal" activity at Meridiani and this clinches it.

--Bill

Errr, could be. I'm getting a bit disoriented here, even with tracking data and orbital images.

--Bill

Here's an identification of features to the NE, where the clay signatures lie:
Click to view attachment
(The inset is L/R registered average of the 2740 navcam, with 2x vertical stretch.)

The circled outcrops could be our first peek at the rocks we've been seeking for so long...

Nice. And if it helps with orientation at all (which is indeed challenging), the 360 degree panorama I posted above is centered on north, as are the circular projections.

Great new images of the Odyssey boulders have come down, looking forward to the mosaics (hope to learn how to make them myself one day). An example of the anaglyphs in store:

Click to view attachment

Yeah, I should say - I couldn't've made those ID's without your mosaic and the circular projections!

BTW, in case anyone isn't monitoring the website, the Endeavour approach movie has been compiled, with accelerometer soundtrack. Really nice.
http://marsrovers.jpl.nasa.gov/newsroom/pr.../20111010a.html

This paper associates phyllosilicates with polygonal lineations in HiRise imagery, and offers some other interesting observations regarding the directions that some of the layers dip.

See this post.

Try, for example, Photoshop Elements. There are also other software, free and commercial, out there. A Google search will come up with plenty of information.

Thanks for reminding us of that paper, Rocker. And Fig 3c in that paper shows the very polygons we're sitting next to right now!

So we know they'll be interested in them. And yesterday there was this cryptic message from Maxwell:I can't wait to find out where we're going!

(Sorry I can't give the direct link to that post - I can't get them to work any more. Fixed.)

Colour mosaic, showing lots of rugged rocky goodness...

Click to view attachment

Are those clouds? I know the vertical stuff is dust, but there's a horizontal banding in there. Just fill?

Lot of fill at the top, well spotted. Just look at the rocky stuff.

No time to check, but it looks like we've driven up to the lineations, and they're visible clearly in the navcams now:
http://qt.exploratorium.edu/mars/opportuni...0M1.JPG?sol2742

Oooooohhhh....

Click to view attachment

Just to give a sense of scale of these features, here's a cloned Oppy shown next to them ...

Click to view attachment

My version of the Kirkland Lake mosaic:



That is some impressive rock pile!

James

[quote name='fredk' date='Oct 11 2011, 09:22 PM' post='179180']
"we've driven up to the lineations, and they're visible clearly in the navcams now"

Where are they in that image then? Can you point them out? Sorry not to have done my homework.

Sol 2742 Navcam 360x80 left right anaglyph

Because this area might just be of particular interest, here's a QuickTime VR of the Navcam panorama anaglyph (Sol 2742) (7.4 MB)

Edit: Worth noting: when you first open this, the view is pointing North. And the big inadvertent seam marks South.

New enhanced crop of HiRISE image ESP_024015_1775 of the area surrounding the lineations:

http://i142.photobucket.com/albums/r91/wil...ecular_city.png

--Bill

I should've checked - we're still a ways short of the main lineations. Here's my best guess of the 2742 location - we appear to be sitting on the edge of a small depression/crater:
Click to view attachment
To my eye, the bright features in the middle of the navcam I posted look quite linear, but they're clearly much too close to be the main "tardis" features. The "tardis" features should be in this frame, roughly where I've circled:
Click to view attachment
Those nearby features may still be related lineations, just too small to see clearly on the hirise view.

The 'back' of Stoughton,
Pancam sol 2736, L257 R2-1,
Colour flicker gif with a synthesized right green channel (a la mhoward).

Click to view attachment

Nice!

omg, that is sweet. I love this outcrop.

This is some of the most amazing imagery we have ever seen of such ancient rocks.

The lineations are indeed not readily visible from ground level. The sparse detritus overlying them "shields" the view at low viewing angles from the ground and blocks less in the "vertical" view of aerials. And they are undoubtedly mineralized joints or fractures, a form of low-temperature hydrothermal activity (a new word to bandy about). Probably created as stress-relief features from the unloading of the surface as the Endeavour rim has eroded (see them all the time in Appalachia) but they may also be related to shock from the concussion of the Endeavour impact (or earlier impacts). They are probably quite common here, but typically are less-visible and covered with the detritus of weathered material whereas at the spot the loose stuff has evidently been transported away. Notice that the Rover tracks sometimes disappear without an obvious change in the albedo or texture of the surface, so there is something different happening here.

Remember that we got a "preview" of lineations when we first arrived at CY and rushed by those fine, reddish lineations on the way to Odyssey. At any rate, the mineralogy of these structures will give great insight into conditions of the time. And a prequel of what cousin Curiosity ought to be looking at in Gale crater.

--Bill

Indeed-- there is so much happening here.

--Bill

Just for fun - but scale is correct - a couple of simulated HiRISE views of what Oppy would look like if she continued to head north, stopping at some scenic points along the way...

Click to view attachment

Click to view attachment

Nice post about the current mapping strategy at Lenda's blog.

Also some new maps, which split Shoemaker ridge into "A" and "B" (we're currently near B ).

Neat. Does anyone know a public source for the topo map in Matt Lenda's late blog entry?

http://1.bp.blogspot.com/-F_1LEola0VQ/TpUK...labels_2742.png



'Twould be nice to be able to snag those from time to time...

--Bill

Small outcrop on Shoemaker Ridge 'B'
Navcam flicker gif, sol 2742.

Click to view attachment

Bill: I, too would like to find a source for that topo. We sometimes see some versions of that map at the Where are the Rovers now link at the JPL rover site. The OSU site is not very helpful in this regard.

Matt: If you are going to post an image supporting a discussion about the need to find north facing slopes, you should either put a north arrow on your map, or you should follow the convention of making maps which have north at the top. Just a suggestion to make it easier for the rest us us to follow your line of reasoning.

I wasn't able to find an "OSU" on the Web. The entity OSU is apparently a loose university consortium of photogrammetric genuises and GIS geeks and not a physical brick-and-mortar organization with a receptionist and front office. I suspect that they develop maps and charts on an as-needed contract basis.

But this is standard photogrammetric work, developing topo maps from stereo pairs. The hard part is making the grid of elevations from the aerials, but this work is done with the contours provided on the map. I'm retired but can probably call in favors on powerful gridding software-- once the elevations and map control points are entered into an autocad-like file it would be trivial to generate one's own topo maps. This can be a lot of work, but do-able as a hobby and I may try it for grins and giggles some day.

Thanks to Matt for sharing this with us, and I surely wish we had a similar topo map of the adjacent area to the NE...

--Bill

OSU - Ohio State University, where Dr. Ron Li and his group have been involved in rover location finding and mapping since the start of the mission!

Phil

http://shoreline.eng.ohio-state.edu/ron/_private/cv.html

Yes, I saw Li's CV and know what OSU is and later found http://shoreline.eng.ohio-state.edu/ and even found this:

http://shoreline.eng.ohio-state.edu/album/...03/opp_2710.jpg

--Bill