CRISM Corner |
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CRISM Corner |
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#16
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Junior Member ![]() ![]() Group: Members Posts: 50 Joined: 7-July 06 From: Selden, NY Member No.: 960 ![]() |
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_* |
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#17
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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... I wish CRISM would have released the Mawrth Vallis data, too. And I'm assuming CRISM's resolution is a little better than this ![]() |
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#18
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Junior Member ![]() ![]() Group: Members Posts: 50 Joined: 7-July 06 From: Selden, NY Member No.: 960 ![]() |
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Guest_AlexBlackwell_* |
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#19
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There was CRISM release today: PIA09101: Seasonal Frost in Terra Sirenum.
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#20
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![]() Member ![]() ![]() ![]() Group: Members Posts: 267 Joined: 5-February 06 Member No.: 675 ![]() |
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 ![]() Steve |
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#21
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Member ![]() ![]() ![]() Group: Members Posts: 258 Joined: 22-December 06 Member No.: 1503 ![]() |
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 ![]() 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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#22
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 ![]() |
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_* |
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#23
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A Fresh Crater Drills to Tharsis Bedrock
MRO CRISM Release February This post has been edited by AlexBlackwell: Feb 12 2007, 09:06 PM |
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Guest_AlexBlackwell_* |
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#24
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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_* |
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#25
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#26
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 ![]() |
Really beautiful images and a fascinating comparison.
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Guest_AlexBlackwell_* |
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#27
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Guest_AlexBlackwell_* |
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#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_* |
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#29
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Guest_AlexBlackwell_* |
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#30
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