Virtual Viking, Images and animations of the Viking landing sites |
Virtual Viking, Images and animations of the Viking landing sites |
Nov 23 2008, 03:07 AM
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#16
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Interplanetary Dumpster Diver Group: Admin Posts: 4405 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
The goldmine(s) for Viking Lander images: Lander Picture Catalogs of Experiment Data Record - NASA Reference Publication 1068 Why? The images are all on the PDS. -------------------- |
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Guest_PhilCo126_* |
Nov 23 2008, 12:56 PM
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#17
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Guests |
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Nov 23 2008, 05:08 PM
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#18
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Founder Group: Chairman Posts: 14448 Joined: 8-February 04 Member No.: 1 |
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Nov 23 2008, 05:16 PM
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#19
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I prefer this source, from which images can be selected by sol, or by clicking on mosaics for each camera to select pictures of a given area.
http://pds-imaging.jpl.nasa.gov/vikingl/vl_images.html Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Apr 21 2009, 02:23 PM
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#20
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
The Viking 1 site mapped in a new way... This is the polar projection of the landing site, which I posted some time ago, reprojected to HiRISE geometry. In this comparison, HiRISE is at the top and the reprojected Viking pan is below it. Mapping from ground-level images is very difficult, and grotesque distortions are inevitable, but this is the best I can do after several weeks and far too many iterations. The original is detailed enough to make a full photomap of the sampling area, and in that area the mosaic is controlled to fit the original mission map.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 11 2009, 07:30 PM
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#21
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I'm still perfecting that reprojected Viking 1 site map. Meanwhile here's a composite of images showing surface changes at the Viking 1 site. There were a few changes in soil patches on the lander itself as well, otherwise these were the only changes seen by Viking 1. For the first one, of course, the change I'm drawing attention to is the erosion by wind of Conical Pile 4 late in the mission. Several other artificial piles of soil were made and monitored but didn't change.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 23 2009, 03:46 AM
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#22
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Another of the things we can do so much better now than in the old days...
The Vikings carried mirrors on the sampler arm, and one of them could be viewed by one of the cameras to see underneath the lander. Seven images of the mirror were taken by Viking 1 on sols 528, 550, 582 and 594. They can be combined to produce a mosaic of the area underneath Engine 2 (the one right under the cameras) to look at the erosion effects of the engine during landing. The version made during Viking times was really bad! But now we can do it much better. This image contains two separate mosaics - they are supposed to fit together, but right now I don't have the old mosaic with me to compare and figure it out. They have been reversed to take the reflection into account and enlarged 2x. The bottom mosaic shows an erosion pit where loose soil has been blown away to reveal harder crusty stuff underneath. (EDIT: I found the location and fixed the mosaic) Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 23 2009, 10:59 PM
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#23
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 24 2009, 01:30 AM
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#24
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Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
Those are truly special, Phil!
-------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
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May 24 2009, 01:54 AM
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#25
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
They are indeed! I'm gonna start saving my pennies for your forthcoming atlas...
-------------------- 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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May 26 2009, 01:58 AM
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#26
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I have edited my post above with the Viking 1 mirror mosaic - took out the old attachment and replaced it with one showing the two halves joined correctly. I found one 'accidental' mirror image from Viking 2 as well, that adds to coverage there, but I don't know exactly where the new frame fits. It doesn't actually overlap the mosaic. For reference these mirror mosaics cover an area roughly 20 by 60 cm across.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 28 2009, 09:07 PM
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#27
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Another bit of Viking history now we are all thinking about the amazing views out past Endeavour crater in the Opportunity thread. After the Viking landing sites had been chosen in 1973 people began to have concerns about their safety. They looked for some extra-safe sites (as determined from earth-based radar) near the equator, the so-called C sites (A sites were at 20 north for the first mission, B sites at 44 north for the second mission. C would be used if A crashed or if all sites at those latitudes looked too rough in Viking images). C1 was just north of Capri Chasma, C3 at Schiaparelli crater, but C2 was at Meridiani. Here's a map showing three possible ellipses described in the minutes of the Landing Site Staff during Viking site certification in 1976. The top one just touched Endeavour crater.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 29 2009, 12:23 AM
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#28
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Fascinating (not a word I use lightly), Phil; did not know that.
One can only imagine how the Mars exploration strategy might have evolved had V1 landed in Meridiani on top of a nice piece of sedimentary pavement... -------------------- 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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May 29 2009, 01:16 AM
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#29
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
There's a lot of good stuff in those committee minutes. My next step is to go through the Viking landing Site Working Group minutes from c. 1970-1974.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 29 2009, 10:19 AM
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#30
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
Another bit of Viking history now we are all thinking about the amazing views out past Endeavour crater in the Opportunity thread. After the Viking landing sites had been chosen in 1973 people began to have concerns about their safety. They looked for some extra-safe sites (as determined from earth-based radar) near the equator, the so-called C sites (A sites were at 20 north for the first mission, B sites at 44 north for the second mission. C would be used if A crashed or if all sites at those latitudes looked too rough in Viking images). C1 was just north of Capri Chasma, C3 at Schiaparelli crater, but C2 was at Meridiani. Here's a map showing three possible ellipses described in the minutes of the Landing Site Staff during Viking site certification in 1976. The top one just touched Endeavour crater. Phil Thanks Phil ! And to complement your good info, here is what was written a while ago + how Meridiani would have looked to the Viking Lander camera. http://www.unmannedspaceflight.com/index.p...st&p=105769 Enjoy ! |
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