HiRISE captures images of Deimos |
  |
HiRISE captures images of Deimos |
 Mar 9 2009, 06:35 PM
Post
#1
|
|
 Senior Member  Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23  |
The HiRISE team today released two images of Mars' moon Deimos, taken on February 21, 2009:
http://hirise.lpl.arizona.edu/deimos.php http://photojournal.jpl.nasa.gov/catalog/PIA11826 Nice confirmation that my MRO model in Celestia works well. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
 |
 
|
|
Mar 9 2009, 06:59 PM
Post
#2
|
|
 Bloggette par Excellence Group: Admin Posts: 3968 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Awesome, thanks for the heads up.
Reality check: I am figuring out the geometry, using my marvelous cut-and-assemble Deimos model. It's telling me that the two photos are of the sub-Mars hemisphere (only hemisphere it could be, given MRO's orbit, so that's reassuring), but it appears they've been released with the south pole up. Do others agree? --Emily -------------------- |
|
|
|
|
Mar 9 2009, 07:09 PM
Post
#3
|
|
 Senior Member Group: Members Posts: 2934 Joined: 4-November 05 From: North Wales Member No.: 542 |
Anyone for 3-D? It ought to work at least for the upper right portion of those images.
|
|
|
|
|
Mar 9 2009, 07:13 PM
Post
#4
|
||||
|
Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Yep South pole is up. In the third view, the blue arrow is from the north pole, the red arrow from the new sub-Mars point, the green arrow from the anti-apex point:
Attached thumbnail(s)
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|||
|
|
|
|||
|
Mar 9 2009, 07:14 PM
Post
#5
|
|
|
Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
QUOTE (ngunn @ Mar 9 2009, 12:09 PM)  Anyone for 3-D? It ought to work at least for the upper right portion of those images. It looks like the central lat and lon is pretty close to being the same, making stereo pretty difficult. The different lighting conditions don't help either. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
|
|
Mar 9 2009, 09:13 PM
Post
#6
|
||
|
Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Another way to look at the geometry of these images:
Attached thumbnail(s)
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
|
|
|
|
Mar 9 2009, 09:17 PM
Post
#7
|
|
|
Bloggette par Excellence Group: Admin Posts: 3968 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Yup, I had my model in my hand as I was figuring it out! Yours seems to have been assembled more neatly than mine though
-------------------- |
|
|
|
|
Mar 9 2009, 09:19 PM
Post
#8
|
|
|
Senior Member Group: Moderator Posts: 2818 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Any engineering problem can be solved with the abundant application of tape.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
|
|
Mar 9 2009, 11:05 PM
Post
#9
|
|
 Senior Member Group: Admin Posts: 4503 Joined: 15-March 05 From: Sloughhouse, CA Member No.: 197 |
What's the orbital period on that massive iPod Jason?
-------------------- If Occam had heard my theory, things would be very different now.
|
|
|
|
|
Mar 10 2009, 12:35 AM
Post
#10
|
|
 Member Group: Members Posts: 752 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
QUOTE (ElkGroveDan @ Mar 9 2009, 07:05 PM) What's the orbital period on that massive iPod Jason? I think it's the Monolith from "2001", updated to 2009. -------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
|
|
|
|
Feb 22 2010, 10:31 PM
Post
#11
|
|
|
Senior Member Group: Members Posts: 4521 Joined: 5-April 05 From: Canada Member No.: 227 |
I'm just starting a new Deimos mosaic for use in my atlas. I will post it here in a day or two. This is the Viking mosaic I made a decade ago, with the two MRO images added. They allow significant improvements in some areas, especially near the prime meridian and on the ridge that extends west along the equator from 0 longitude.
Phil -------------------- ... because the Solar System ain't gonna map itself.
|
|
|
|
|
Feb 23 2010, 04:55 PM
Post
#12
|
||
|
Senior Member Group: Members Posts: 4521 Joined: 5-April 05 From: Canada Member No.: 227 |
OK, here's a new Simple Cylindrical map of Deimos, mostly Viking but with the two MRO views added in.
Phil
-------------------- ... because the Solar System ain't gonna map itself.
|
|
|
|
|
|
|
Feb 23 2010, 08:30 PM
Post
#13
|
||
|
Member Group: Members Posts: 707 Joined: 30-March 05 Member No.: 223 |
QUOTE (ngunn @ Mar 9 2009, 08:09 PM) Anyone for 3-D? Here is a very quick trial at a single-image shape-from-shading 3D reconstruction of the surface (un-optimized and without the exact viewing parameters, light source direction etc.)
|
|
|
|
|
|
|
Feb 25 2010, 07:29 PM
Post
#14
|
||
|
Senior Member Group: Members Posts: 4521 Joined: 5-April 05 From: Canada Member No.: 227 |
Again using the Deimos map incorporating MRO images - here's a new map of Deimos in a different map projection from the cylindrical - this is designed to illustrate the shape of the body as well as the locations of surface features.
Phil
-------------------- ... because the Solar System ain't gonna map itself.
|
|
|
|
|
|
|
Feb 26 2010, 02:57 PM
Post
#15
|
||
|
Senior Member Group: Members Posts: 4521 Joined: 5-April 05 From: Canada Member No.: 227 |
How do you go from the cylindrical map of Deimos to the two 'hemispheres' ? Here's a comparison showing an intermediate step, an azimuthal equidistant projection in two hemispheres.
Phil
-------------------- ... because the Solar System ain't gonna map itself.
|
|
|
|
|
|
|
|
Lo-Fi Version | Time is now: 25th May 2013 - 04:30 PM |
|
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE 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 a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here. |
|
