Globes of the planet MERCURY |
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Globes of the planet MERCURY |
 Dec 23 2006, 07:59 PM
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#16
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 Member  Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347  |
Here's an attempt to project distant Mariner 10 images of Mercury on a global map. Global albedo variations are visible and color was computed from clear, blue and UV filtered images were available. The image posted by tedstryk was included.
The matching of the images is far from perfect, but it looks nice! Also, with proper care, it's possible to extend surface coverage a little.
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www.astrosurf.com/nunes |
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Dec 23 2006, 10:50 PM
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#17
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 Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
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Dec 24 2006, 01:52 AM
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#18
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Still at Mercury
 I managed to reach what I was after, a nice global color view of Mercury, representative of the topography, albedo and contrast. Of course, colors are only aproximate, because there's only clear and blue filter data, but it looks realistic! Merry Christmas!!!
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www.astrosurf.com/nunes |
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Dec 24 2006, 04:58 AM
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#19
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 Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (4th rock from the sun @ Dec 24 2006, 01:52 AM)  Still at Mercury I managed to reach what I was after, a nice global color view of Mercury, representative of the topography, albedo and contrast. Of course, colors are only aproximate, because there's only clear and blue filter data, but it looks realistic! Merry Christmas!!!
Great work! Also, great work on the map. -------------------- |
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Dec 24 2006, 03:43 PM
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#20
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462 |
QUOTE (4th rock from the sun @ Dec 23 2006, 07:59 PM) Here's an attempt to project distant Mariner 10 images of Mercury on a global map. Global albedo variations are visible and color was computed from clear, blue and UV filtered images were available. The image posted by tedstryk was included. The matching of the images is far from perfect, but it looks nice! Also, with proper care, it's possible to extend surface coverage a little.
Here's a link to a Mercator projection of Mercury's surface combining Mariner 10 data & Baumgardner's images. http://spaceflightnow.com/news/n0005/28mercury/index.html Radar studies also indicate that the dark area of missing data between the Mariner 10 & Baumgardner coverage contains a huge impact basin. I wrote a piece for UK magazine Astronomy Now on Baumgardner's images some time ago; fascinating stuff. That rayed crater is perhaps one of Mercury's youngest surface features. -------------------- It's a funny old world - A man's lucky if he gets out of it alive. - W.C. Fields.
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Dec 24 2006, 05:05 PM
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#21
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
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Dec 24 2006, 07:37 PM
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#22
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
QUOTE (karolp @ Dec 23 2006, 07:42 AM) From what I see Baumgardner's composite images show the "unknown" hemisphere to be even more Moon-like with a rayed crater and a large "mare"-like structure. Is it possible that Solar tides have induced lava outflows which formed Mercurian "maria" just like those on the "near" side of the Moon? Did Mariner 10 photograph the "near" (facing Sun) or "far" side of Mercury? Mercury isn't locked to the Sun in the same way that the Moon is to the Earth, so it would be surprising if the difference between hemispheres is as striking; the mass imbalance between lunar hemispheres probably helped the Moon achieve its tidal lock. Mercury has a 3:2 ratio between its day & year, which means that the planet completes three sidereal rotations for every two orbits. Might this argue for relatively uniform mass distribution, and/or could this be a side effect of the planet's liquid core? -------------------- 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 24 2006, 07:45 PM
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#23
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Member Group: Members Posts: 117 Joined: 7-December 06 From: Sheffield UK Member No.: 1462 |
Thanks for that link, the maps are amazing and the surface details are so tantilizing. Our maps of Mercury are at about the same stage as our lunar maps circa early 1960's.
It'll be great when MESSENGER finally plugs the last gaps in our knowledge of the first planet! -------------------- It's a funny old world - A man's lucky if he gets out of it alive. - W.C. Fields.
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Dec 24 2006, 10:40 PM
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#24
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 Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (As old as Voyager @ Dec 24 2006, 07:45 PM) Thanks for that link, the maps are amazing and the surface details are so tantilizing. Our maps of Mercury are at about the same stage as our lunar maps circa early 1960's. It'll be great when MESSENGER finally plugs the last gaps in our knowledge of the first planet! Remember also C A Cross's maps based on Mariner 10 data, as previously discussed on UMSF! Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Dec 25 2006, 09:16 PM
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#25
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Solar System Cartographer Group: Members Posts: 10151 Joined: 5-April 05 From: Canada Member No.: 227 |
Bob, you made it back! Now I know it's christmas.
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 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 26 2006, 02:47 AM
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#26
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Bob, your return has made this one of the happier Christmases I can remember!
Good to have you back! -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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