IPB

Welcome Guest ( Log In | Register )

17 Pages V   1 2 3 > »   
Reply to this topicStart new topic
Phobos
Guest_Sunspot_*
post Nov 11 2004, 11:46 PM
Post #1





Guests






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
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 18 2006, 05:49 AM
Post #2


Solar System Cartographer
****

Group: Members
Posts: 10122
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

Attached Image


--------------------
... because the Solar System ain't gonna map itself.

Also to be found posting similar content on https://mastodon.social/@PhilStooke
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
djellison
post Nov 18 2006, 07:12 AM
Post #3


Founder
****

Group: Chairman
Posts: 14431
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
Go to the top of the page
 
+Quote Post
Guest_PhilCo126_*
post Nov 18 2006, 09:02 AM
Post #4





Guests






Waaw thanks for sharing those!
ohmy.gif
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 18 2006, 01:31 PM
Post #5


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
tedstryk
post Nov 19 2006, 02:13 AM
Post #6


Interplanetary Dumpster Diver
****

Group: Admin
Posts: 4404
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).



--------------------
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 19 2006, 03:22 AM
Post #7


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 19 2006, 04:02 PM
Post #8


Solar System Cartographer
****

Group: Members
Posts: 10122
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:

Attached Image


Phil


--------------------
... because the Solar System ain't gonna map itself.

Also to be found posting similar content on https://mastodon.social/@PhilStooke
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 19 2006, 10:37 PM
Post #9


Solar System Cartographer
****

Group: Members
Posts: 10122
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

Attached Image


--------------------
... because the Solar System ain't gonna map itself.

Also to be found posting similar content on https://mastodon.social/@PhilStooke
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
ugordan
post Nov 20 2006, 07:54 AM
Post #10


Senior Member
****

Group: Members
Posts: 3648
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?


--------------------
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 20 2006, 02:20 PM
Post #11


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
dilo
post Nov 20 2006, 07:45 PM
Post #12


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 -
Go to the top of the page
 
+Quote Post
dilo
post Nov 20 2006, 07:52 PM
Post #13


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 -
Go to the top of the page
 
+Quote Post
Phil Stooke
post Nov 20 2006, 11:57 PM
Post #14


Solar System Cartographer
****

Group: Members
Posts: 10122
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
NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
Go to the top of the page
 
+Quote Post
tedstryk
post Nov 21 2006, 12:14 AM
Post #15


Interplanetary Dumpster Diver
****

Group: Admin
Posts: 4404
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!


--------------------
Go to the top of the page
 
+Quote Post

17 Pages V   1 2 3 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 19th March 2024 - 06:40 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member.