Phobos |
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Phobos |
| Guest_Sunspot_* |
 Nov 11 2004, 11:46 PM
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#1
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http://www.esa.int/SPECIALS/Mars_Express/
These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA’s Mars Express spacecraft, are Europe’s highest-resolution pictures so far of the Martian moon Phobos. http://www.esa.int/SPECIALS/Mars_Express/SEM21TVJD1E_0.html |
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Nov 18 2006, 05:49 AM
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#2
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Solar System Cartographer  Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Here's a Mars Express Phobos image from orbit 1607- a distant view. There is a close view on this orbit, but I haven't got the patience to download 600 Mb of mostly dark sky.
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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Nov 18 2006, 07:12 AM
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#3
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Founder Group: Chairman Posts: 14448 Joined: 8-February 04 Member No.: 1 |
What is it with the PDS/PSA and their total hatred of Zip/Rar/GZ'ing files that actuall comrpess REALLY well...
At least the small bodies node have the right attitude for this stuff. Doug |
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| Guest_PhilCo126_* |
 Nov 18 2006, 09:02 AM
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#4
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Waaw thanks for sharing those!
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Nov 18 2006, 01:31 PM
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#5
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Mea culpa - I see now that the second image from that orbit, the 600 MB file, is of Mars, not Phobos.
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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Nov 19 2006, 02:13 AM
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#6
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 Interplanetary Dumpster Diver Group: Admin Posts: 4405 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
600 MB? The biggest Phobos images from that orbit are about 2 MB. Where were you looking? I was on the PDS Geosciences node.
Here are the two highest resolution images from this orbi (1607). 
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Nov 19 2006, 03:22 AM
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#7
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I checked this after reading your question, Ted. The Data directory has the full res images, and for the largest image from that orbit it says:
Wednesday, April 26, 2006 6:49 AM 697587740 h1607_0009_nd2.img 697 Mb. But I was mistaken in thinking it was Phobos, I assumed that without checking - the second set of images from 1607 are of Mars. Even so, the largest Phobos image on that orbit, the nd2 image, is 9548940 bytes. Your images are the "super-resolution" images which are a lot smaller. There are some very similar images of Phobos in orbit 1574 as well. 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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Nov 19 2006, 04:02 PM
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#8
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
- and another in orbit 1558, but this one is from orbit 1212, the nadir (nd2) image:
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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Nov 19 2006, 10:37 PM
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#9
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I'm still exploring the Mars Express Phobos images. This, I think, is the highest resolution image yet, from orbit 756. The original file was 169 MB, but largely dark sky. I have played with the contrast a bit to brighten the terminator. Several blocks casting shadows can be found along the terminator.
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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Nov 20 2006, 07:54 AM
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#10
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 Senior Member Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
Nice image, Phil. Where do the JPEG-ish artifacts come from, was this one lossy compressed before transmission?
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Nov 20 2006, 02:20 PM
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#11
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
No, I compressed it severely to reduce the file size for posting on UMSF.
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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Nov 20 2006, 07:45 PM
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#12
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Very impressive shot, Phil... resolution should be around 3m/pixel!
The file you posted is only 460k, I think is worth to re-post a less compressed version... please! -------------------- I always think before posting! - Marco -
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Nov 20 2006, 07:52 PM
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#13
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
sorry, wrong re-post.
-------------------- I always think before posting! - Marco -
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Nov 20 2006, 11:57 PM
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#14
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I will put the uncompressed image on an external website tomorrow.
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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Nov 21 2006, 12:14 AM
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#15
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Interplanetary Dumpster Diver Group: Admin Posts: 4405 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (Phil Stooke @ Nov 20 2006, 11:57 PM)  I will put the uncompressed image on an external website tomorrow. Phil The best I could do with 16 bit lossless compression was over 9 MB! -------------------- |
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