The power of HiRISE |
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The power of HiRISE |
 Oct 9 2008, 08:04 PM
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#1
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 The Poet Dude  Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60  |
Busy preparing a new Outreach talk here, and have been trying to find some images to illustrate the "power" of HiRISE for a non-technical audience. Playing about with - sorry, carefully looking at the images on - the addictive Mars Global Data site I found a cute landslide on Xanthe Terra that does the trick nicely. Using the IAS Viewer you can zoom in on the boulders carried down the slope by the landslide and even see cracks and splits in them... unbelievable...!
Anyone else got any fave examples? -------------------- |
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Oct 9 2008, 09:20 PM
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#2
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Senior Member Group: Members Posts: 1598 Joined: 14-October 05 From: Vermont Member No.: 530 |
Emily's series about White Rock is good, too.
 (Course now that I go looking, it might not have gotten to HiRise!) http://www.planetary.org/blog/archive/35/ |
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Oct 9 2008, 09:35 PM
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#3
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
I did -- but you remind me I promised to wrap this up, and I haven't delivered on that promise yet...
http://www.planetary.org/blog/article/00001419/ --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Oct 9 2008, 10:29 PM
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#4
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Yep, Emily's "White Rock" sequence is an outstanding piece of work, to be sure. I'm not comparing this Xanthe sequence to it at all; I was just struck by the detail visible in those shattered rocks
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Oct 10 2008, 03:14 AM
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#5
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Member Group: Members Posts: 600 Joined: 26-August 05 Member No.: 476 |
As in Emily's presentation, consider adding scale bars to the images?
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Oct 10 2008, 08:10 AM
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#6
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Member Group: Members Posts: 293 Joined: 22-September 08 From: Spain Member No.: 4350 |
Spider:
http://hirise.lpl.arizona.edu/PSP_003087_0930 The famous avalanche: http://hirise.lpl.arizona.edu/PSP_007338_2640 Rolling stones: http://hirise.lpl.arizona.edu/images/2008/...47_1895_cut.jpg Frost covered gullies: http://hirise.lpl.arizona.edu/PSP_001552_1410 |
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Oct 10 2008, 08:48 AM
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#7
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 Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
QUOTE (Fran Ontanaya @ Oct 10 2008, 09:10 AM)  Rolling stones: http://hirise.lpl.arizona.edu/images/2008/...47_1895_cut.jpg I've not seen the image on the right before - I make that an Evel Knieval-like ~17m jump across the crater. Imagine being sat in the bottom of that as a 4m rock zips over your head... Andy |
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Nov 28 2008, 09:08 PM
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#8
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 Member Group: Members Posts: 571 Joined: 20-April 05 From: Silesia Member No.: 299 |
I found another unusual boulder track. You can see clearly how increased speed of the boulder on the slope. Jumps were increasingly longer, even a few dozen meters.
Hills Northeast of Mojave Crater (PSP_008430_1895) - general view
Hills Northeast of Mojave Crater (PSP_008430_1895) - "Rolling Stone"
Boulder in the final position
I was very skeptical before Mars Reconnaissance Orbiter mission. Another mission to Mars similar to the Mars Global Surveyor mission, what's interesting in this. I was wrong, MRO is the ultimate achievement in the field of imaging of Mars from orbit. -------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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Nov 28 2008, 09:23 PM
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#9
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Senior Member Group: Members Posts: 1078 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Judging from the freshness of the tracks, this event must have happened quite recently. Did MRO by any chance image this area before?
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Nov 28 2008, 11:18 PM
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#10
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Member Group: Members Posts: 713 Joined: 30-March 05 Member No.: 223 |
QUOTE (peter59 @ Nov 28 2008, 10:08 PM) MRO is the ultimate achievement in the field of imaging of Mars from orbit. Yes, Absolutely. MRO almost "feels" more like viewing the martian landscape out of a helicopter window than from orbit ... When I was younger I have always been dreaming about future Mars missions involving balloons or airplanes and wondered how phantastic a feeling it would be to view all the images and vistas those aircrafts would take from above ... finally bridging the gap in scale between the ground level images of the landers (Viking) and the very low resolution views of the orbiters ... Now we don't have martian airplanes yet but we have MRO ... and it's even better for it's global scope of operation
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Nov 29 2008, 04:33 AM
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#11
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 Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
I would love to see an anaglyph of that scene!
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Nov 29 2008, 01:37 PM
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#12
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 Member Group: Members Posts: 710 Joined: 28-September 04 Member No.: 99 |
QUOTE (Nirgal @ Nov 29 2008, 12:18 AM) Yes, Absolutely. MRO almost "feels" more like viewing the martian landscape out of a helicopter window than from orbit ... Interesting thought. Is there a way to calculate at what altitude a human (eye) has the same resolution as HiRise? Is it comparable to a helicopter flight or looking down through the clouds from an airliner? |
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Nov 29 2008, 03:21 PM
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#13
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 Member Group: Admin Posts: 978 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
QUOTE (OWW @ Nov 29 2008, 05:37 AM) Interesting thought. Is there a way to calculate at what altitude a human (eye) has the same resolution as HiRise? Is it comparable to a helicopter flight or looking down through the clouds from an airliner? Assuming that the human eye visual acuity is about 0.59 arc min and HiRISE at 0.25m/pixel you get an altitude of about 1456m or about 4800' (if I did my math correctly). Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Nov 29 2008, 03:48 PM
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#14
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
QUOTE (peter59 @ Nov 28 2008, 10:08 PM)
What's circa the size of that boulder? 3x4 meters? -------------------- |
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Dec 1 2008, 10:33 PM
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#15
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 Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
There was some concern before that HiRise's resolution would actually be greater than the Mars atmosphere would allow due to twinkling. Has anyone taken a look at that again? What's the new maximum theoretical resolution from orbit? Less than 5cm?
-------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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