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Sol 90+, Extended mission
Fran Ontanaya
post Oct 8 2008, 03:11 PM
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QUOTE (Stu @ Oct 8 2008, 04:06 PM) *
"martian jewels"


Actually: http://flickr.com/photos/flynnspaws/2438085612/
(Now, to solve the mistery of the missing martian parakeets...)


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Stu
post Oct 8 2008, 04:15 PM
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New 3D image here if anyone wants a look...

Go on then, Phoenix, just have a play about for a while... laugh.gif



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dilo
post Oct 8 2008, 04:24 PM
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Amazing anaglyph, Stu! ph34r.gif


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Stu
post Oct 8 2008, 04:36 PM
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Thanks smile.gif Take another look, I've added an enhanced version that shows more detail in the shadowed areas... very easy to imagine just reaching down and scooping up a handful of grit and pebbles and stones, isn't it?


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Ant103
post Oct 9 2008, 02:20 PM
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Do you want a color version of this anaglyph?

Here it is wink.gif



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Stu
post Oct 9 2008, 02:21 PM
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Nicely done, sir! smile.gif
BTW: Sol 133 view... enjoy smile.gif There's so much detail in those trenches it's really like being there, kneeling down beside the trench and just looking into it...


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01101001
post Oct 9 2008, 05:49 PM
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QUOTE (MahFL @ Sep 24 2008, 06:22 AM) *
Can I just get confirmation from someone that the white stuff in this picture is CO2 frost ?
Thank you.


I think we already covered this well: it's not CO2.

Here's a Space.com about the doomed Phoenix and the coming cold: Space.com: Frozen Death Looms for Phoenix Mars Lander

QUOTE
So far, the frost hasn't formed on the lander — except for on the small mirror used to view the wind telltale at the top of the meteorological mast — because Phoenix stays warmer than the ground around it.

"In general the lander itself is designed to absorb as much solar radiation as it can, and to emit relatively little radiation in the infrared. So the lander deck has been much hotter than the surrounding ground surface, for instance," [meteorological team member Peter] Taylor explained. "It's a bit like the top of a relatively warm computer, if you like."

The lander will likely stay warmer than its surroundings for awhile after Phoenix loses the energy it needs to operate, "so it'll be pretty late on when frost actually starts to form on the lander," Taylor said. So Phoenix isn't likely to get any pictures of itself coated in frost.

Right now the frost that is forming is all water ice because it is not yet cold enough at Phoenix's latitude for carbon dioxide ice to form, though it eventually will. Whether the frost will come as a thin coating or a thick sheet, like Mars' polar ice caps, isn't known.
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Stu
post Oct 9 2008, 07:12 PM
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Sol 132 postcard landscape view...

The Phoenix news site says there's frost on the "raw" RGB version of that image.


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marsophile
post Oct 9 2008, 11:37 PM
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There seems to be trouble in getting a substantial ice sample into TEGA. Would it be worth examining an ice sample in the OM and AFM microscopes? Assuming the ice is transparent, there might be some interesting embedded particles. Details of the crystalline structure of the ice might also possibly be informative. Are the MECA chambers pressurized and/or warm? Would the ice melt?
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James Sorenson
post Oct 10 2008, 03:05 AM
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QUOTE
Whether the frost will come as a thin coating or a thick sheet, like Mars' polar ice caps, isn't known.


I was wondering if there has been any observations from any of the orbiters of past seasonal CO2 deposits at the phoenix landing site? I know at this lattitude ice is likely to form, but I have not seen any solid imagery to tell me otherwise. Basically a before picture is what Im asking smile.gif .
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CosmicRocker
post Oct 10 2008, 05:58 AM
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...a more or less random thought here... Might this lander be able to conserve a full charge on the battery as the lights inevitably go out, so it could later return one or more images taken well after most operations cease? Is there a camera which could prevent frost from forming on it's lens until such a time? Are there other operations that would supersede such an attempt?


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Fran Ontanaya
post Oct 10 2008, 07:50 AM
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Or with a full battery, would it be able to analyze the last TEGA oven after letting TEGA cool down and pick up atmospheric ice? It would be almost pure ice, though, not extremely interesting.


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"I can easily see still in my mind’s-eye the beautiful clusters of these berries as they appeared to me..., when I came upon an undiscovered bed of them... – the rich clusters drooping in the shade there and bluing all the ground" -- Thoreau
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Guest_jumpjack_*
post Oct 10 2008, 09:34 AM
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Guests






I collected all animations found in this thread, and many others, into a single, HEAVY rolleyes.gif web page:
http://www.planetmobile.it/jumpjack/immagi...ni-phoenix.html

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Deimos
post Oct 10 2008, 03:00 PM
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QUOTE (CosmicRocker @ Oct 10 2008, 06:58 AM) *
Might this lander be able to conserve a full charge on the battery as the lights inevitably go out, so it could later return one or more images taken well after most operations cease?

Good thought ... but it seems unlikely. Attempting to conserve the battery across many sols would mean turning off survival heaters. The lander doing no science uses more energy than both MERs together currently have available, partly due to the temperature of the environment (and lack of RHUs). Some things that need to stay above a certain temperature to avoid breaking include the RA & TEGA electronics, part of MET, the batteries themselves. A better bet may be that after the batteries go under voltage, the lander comes back up in Lazarus mode as long as there is still some time with enough sunlight.
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MahFL
post Oct 10 2008, 05:10 PM
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QUOTE (marsophile @ Oct 10 2008, 12:37 AM) *
Are the MECA chambers pressurized and/or warm? Would the ice melt?


I am sure I read warm.
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