Cape York - Northern Havens, Sol 2780 - 2947 |
Cape York - Northern Havens, Sol 2780 - 2947 |
Dec 2 2011, 04:31 PM
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#106
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Solar System Cartographer Group: Members Posts: 10186 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 PD: 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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Dec 3 2011, 12:34 AM
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#107
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
On sol 2786, Oppy took 12 left-eye images of the sun-dial. The two sets of 6 images were offset in time (the shadow moved)
So, I stacked them all anyways to improve S/N (and lost all' color' info in the process) Someone please tell me that MSL will be able to focus its sun-dial better... (you can almost read 'two worlds one sun' at the bottom) -------------------- CLA CLL
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Dec 3 2011, 12:54 AM
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#108
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Member Group: Members Posts: 507 Joined: 10-September 08 Member No.: 4338 |
The sundial is actually slightly closer than the minimum focal distance of the pancam. You might be able to improve things by applying a deconvolution algorithm.
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Dec 3 2011, 12:57 AM
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#109
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
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Dec 3 2011, 02:39 AM
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#110
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Junior Member Group: Members Posts: 98 Joined: 17-July 11 From: Pasadena, CA Member No.: 6066 |
Amazing that there's still adequate charge with all the dust! A non-nuclear future mission could have little fans along the edge of the panels, for the occasional dust-off. [attachment=26095:dust_factor.jpg] For now, let's hope hope for one of these: This makes me sad-face... but then happy-face again since, you know, Oppy's still chugging along like it ain't no thang. -m |
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Dec 3 2011, 04:46 AM
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#111
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Senior Member Group: Members Posts: 4252 Joined: 17-January 05 Member No.: 152 |
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Dec 3 2011, 04:55 AM
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#112
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
QUOTE You might be able to improve things by applying a deconvolution algorithm And the "IR bands" (L2 and R7) are worse about being a bit soft inside that QUOTE This makes me sad-face... but then happy-face again Yeppers. Like Harry Callahan used to say, "You gots to know your limitations"...The Saddleback sequence (p2438) from Sol-2793 is astounding but the Foreground Quarter (p2587) hasn't made it to Exploratorium yet. --Bill -------------------- |
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Dec 3 2011, 03:47 PM
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#113
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Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
Yes, MSL's Mastcams can focus at a range of distances. But, as with Pancam, the foremost desire is to provide good focus for Mars. The Pancams have a wide field of view; the Mastcams do not have such a wide FOV. So, do not expect perfect focus on the cal target ("sundial")--but do expect very good pictures of that and everything else.
FWIW, having the cal targets be in focus for Pancam would have required either (a) a much larger depth of field, with a side effect of much noisier images (especially in blue, green, and 1-micron filter); or ( having the horizon--and anything past, a few m--be out of focus instead. Everything is a trade (like ineffectual solar panel fans vs. a science payload). The Pancams (like IMP and SSI) are set at their hyperfocal position, such that "infinity" is at one end of the depth of field, the other end is somewhere around 2-3 m, and best focus is in between (like 5m or so). |
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Dec 3 2011, 08:35 PM
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#114
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
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Dec 3 2011, 09:50 PM
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#115
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Oh, man... ...so do you, Stu! That's a beautiful image.
-------------------- 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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Dec 4 2011, 04:22 AM
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#116
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Member Group: Members Posts: 404 Joined: 5-January 10 Member No.: 5161 |
In this nice view looking back to Turkey Haven the rock on the low ledge doesn't look so brittle where the three wheels rolled over (in the foreground). If my calculations were right, that's about 11.4 kilograms (25 lbs) per wheel! (Weight of rover: 180 kg. Gravity on Mars: 38% of Earth's. Number of wheels: 6.) But that's assuming each wheel carries equal load, which might not be the case.
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Dec 4 2011, 09:35 AM
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#117
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Senior Member Group: Members Posts: 2837 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
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Dec 4 2011, 10:15 AM
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#118
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Updated view of "Saddleback"... so many fascinating features, hues and shapes here all you can do is pan across the image and shake your head in wonder...
Full size version up on my RtE blog now... http://roadtoendeavour.wordpress.com/2011/...-birthday-to-us (to celebrate its 3rd birthday...feel free to drop by, bring a bottle, there'll be nibbles... ) -------------------- |
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Guest_Sunspot_* |
Dec 4 2011, 01:57 PM
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#119
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Guests |
Saddleback/Blencathra?
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Dec 4 2011, 02:26 PM
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#120
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Wow... I hadn't made that connection, which is a bit embarrassing seeing as I don't live *that* far from Blencathra... well spotted, Sunspot... when you look at the rocks up there they look **very** familiar, don't they?
Could just be a coincidence, haven't checked into it very deeply yet, but if they have named this martian feature after the Cumbrian fell Blencathra, maybe one of the rover team has been walking in the Lakes at some point, that would be great to know! (More Blencathra info and pics here: http://www.stridingedge.net/wainwright%20f.../Blencathra.htm ) -------------------- |
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