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Distant vistas, Endeavour, Iazu, and beyond
ngunn
post Feb 6 2010, 07:10 PM
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I've been pondering these features, the farther and the nearer, for the last few hours but without having your handle on the subtended sizes. I believed Tesheiner (as one does smile.gif) but then couldn't find anything on Stu's Hirise crop that looked like the nearer features. Then again like Tman I thought the downward slope would be starting about where the twin craters are, so wouldn't have expected the ground to rise again immediately beyond. I can't be much use here but I'll stay closely tuned to learn how it pans out.
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Tesheiner
post Feb 6 2010, 07:25 PM
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We will certainly have to keep an eye on those features once we leave this area.
Fredk is right. Althought the horizon feature is at the right heading, it's too small to be the twin craters; those ones, combined, cover about 3.5 viewed from the current position, while the black feature has only 0.4.

QUOTE (fredk @ Feb 6 2010, 07:10 PM) *
Is there another feature somewhat farther than Twin Craters that the dark feature on the horizon could be?

Unfortunately, the HiRISE picture I'm using doesn't cover that area.
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Phil Stooke
post Feb 6 2010, 08:02 PM
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Here's a crater in about the right place.

Phil

Attached Image


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... because the Solar System ain't gonna map itself.
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ngunn
post Feb 6 2010, 08:10 PM
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That looks highly plausible Phil. How far away is that? Is it on our projected route?
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Phil Stooke
post Feb 6 2010, 08:18 PM
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It is about where we start to turn to the east after this long trek south and west (about 1400 m south of Concepcion).

Meanwhile, here is another look at Iazu, a comparison of two sols (cut from a post higher up in this thread). I have labelled four hills, and the way hill D gets displaced relative to the other three suggests it must be on the far rim of Iazu.

Phil

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... because the Solar System ain't gonna map itself.
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nprev
post Feb 7 2010, 05:36 AM
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Stu's latest pic (which is a wow!) made me realize something that is stunningly obvious, but bears reflection: All of the geology @ Meridiani is completely buried. It take an impact to bring anything at all up above the sand. This is strikingly different from the other locales on Mars we've been able to see at this scale.

Why?


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A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Shaka
post Feb 7 2010, 08:42 PM
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The soft, sulfate sandstone surrounding us at the surface is swiftly and steadily sanded smooth in the short term.
The relatively resistant, robust rocks representing the rest retain the resplendent relief remaining from the remote realm of real rheology and resurfacing.

Really cool.gif


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nprev
post Feb 7 2010, 08:53 PM
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Oh, great. Now I gotta come up with a sentence featuring words that start with "Q"??!

Quiescent quiteus, queries quintessential (quixotically?)

I quit!

[EDIT: Quorrected!]


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djellison
post Feb 7 2010, 10:51 PM
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Quite.
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NW71
post Feb 7 2010, 11:05 PM
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please... smile.gif
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nprev
post Feb 8 2010, 01:05 AM
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Damned if I didn't misspell "quintessential" to boot (Corrected...I hope!)! Argh. Gonna get the letter Q kicked out of the English language for good; I'll let you all know when it's done.


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Astro0
post Feb 8 2010, 01:17 AM
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Please be kwik! laugh.gif
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ngunn
post Feb 8 2010, 10:23 AM
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Now we are sicks?
http://images.google.com/imgres?imgurl=htt...t%3D40%26um%3D1
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Phil Stooke
post Feb 8 2010, 12:01 PM
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"Gonna get the letter Q kicked out of the English language for good"

Finally, a use for those defective keyboards from Dilbert.

Phil


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ngunn
post Feb 8 2010, 10:59 PM
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Referring to the crater that appears on the horizon beyond 'twin craters' -

QUOTE (Phil Stooke @ Feb 6 2010, 08:18 PM) *
It is about where we start to turn to the east after this long trek south and west (about 1400 m south of Concepcion).


I'm still not entirely making sense of this. Using the 800m diameter of Victoria for scale I reckon we turn east less than 1400 metres south of Concepcion. Also, 1400 metres south of Concepcion would place that horizon feature below the next (downward) contour on the map. I'm aware of the limitations of the map. So I still don't know if we're going to visit that crater or not, and I'm now additionally uncertain about where the opening up of the view to the S and SW can be expected. Can anybody shed light?
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