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CRISM Corner
tglotch
post Dec 18 2006, 04:01 PM
Post #16


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At the AGU meeting last week, CRISM PI Scott Murchie showed CRISM data from Nili Fossae and Mawrth Vallis, which confirm the OMEGA findings of clays, but at much higher spatial resolution. The real strength of CRISM is going to be the ability to correlate spectral features with distinct geologic units at ~20 m/pix. In addition Scott also showed ice-rich and ice-poor regions in the polar layered deposits. Team members Frank Seelos and Kim Seelos also presented posters showing data from the CRISM global coverage mode, focusing on the north polar cap and potential Phoenix landing sites. Not much to report in terms of composition there yet.
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Guest_AlexBlackwell_*
post Dec 18 2006, 07:43 PM
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QUOTE (tglotch @ Dec 18 2006, 06:01 AM) *
At the AGU meeting last week, CRISM PI Scott Murchie showed CRISM data from Nili Fossae and Mawrth Vallis, which confirm the OMEGA findings of clays...

I wish CRISM would have released the Mawrth Vallis data, too. And I'm assuming CRISM's resolution is a little better than this biggrin.gif
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tglotch
post Dec 18 2006, 10:11 PM
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QUOTE (AlexBlackwell @ Dec 18 2006, 07:43 PM) *
I wish CRISM would have released the Mawrth Vallis data, too. And I'm assuming CRISM's resolution is a little better than this biggrin.gif


Actually its about the same as this
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Guest_AlexBlackwell_*
post Dec 22 2006, 08:26 PM
Post #19





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There was CRISM release today: PIA09101: Seasonal Frost in Terra Sirenum.
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SteveM
post Dec 22 2006, 08:45 PM
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Should we be concerned about the noise in the green (1.45uM CO2 absorption) band?

Either it was a weak, therefore noisy, signal

or there are some instrumentation problems with CRISM sad.gif .

Steve
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MarsIsImportant
post Dec 22 2006, 08:58 PM
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QUOTE (Steve @ Dec 22 2006, 02:45 PM) *
Should we be concerned about the noise in the green (1.45uM CO2 absorption) band?

Either it was a weak, therefore noisy, signal

or there are some instrumentation problems with CRISM sad.gif .

Steve


Just a thought,

Could the problem be somehow related to the recent solar activity? And if it is, might it be a temporary problem?
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ugordan
post Dec 22 2006, 09:11 PM
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There's probably nothing wrong with CRISM. You can't expect s/n ratios equal to framing cameras because spectrometers split the incoming light into a huge nuber of different wavelengths that are separately detected. The total energy per wavelength slice is thus reduced. There's also the way the spectrometers are built that they can be susceptible to noise (such as lower quantum efficiencies for certain wavelengths, ccd damage, etc). If you want to see what ugly data really looks like, take a look at Cassini's VIMS visual channel products.


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Guest_AlexBlackwell_*
post Feb 12 2007, 06:00 PM
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A Fresh Crater Drills to Tharsis Bedrock
MRO CRISM Release
February 12 13, 2007

This post has been edited by AlexBlackwell: Feb 12 2007, 09:06 PM
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Guest_AlexBlackwell_*
post Feb 12 2007, 07:37 PM
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Note that the above release has been now delayed until tomorrow, though the link still works.
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Guest_AlexBlackwell_*
post Feb 15 2007, 07:30 PM
Post #25





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A Change in the Weather
MRO CRISM Release
February 15, 2007
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ngunn
post Feb 16 2007, 02:06 PM
Post #26


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Really beautiful images and a fascinating comparison.
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Guest_AlexBlackwell_*
post Feb 21 2007, 04:16 PM
Post #27





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Dune Field in Nili Patera
MRO CRISM Release
February 21, 2007
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Guest_AlexBlackwell_*
post Feb 22 2007, 01:41 AM
Post #28





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I'm slipping. I missed this general CRISM press release a few days ago: Mineral Mapper Marks 100 Days at Mars.
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Guest_AlexBlackwell_*
post Feb 23 2007, 05:26 PM
Post #29





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Olivine in the Southern Isidis Basin
MRO CRISM Release
February 23, 2007
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Guest_AlexBlackwell_*
post Feb 27 2007, 06:53 PM
Post #30





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A Cold Day in Richardson Crater
MRO CRISM Release
February 27, 2007
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