IPB

Welcome Guest ( Log In | Register )

104 Pages V  « < 18 19 20 21 22 > »   
Reply to this topicStart new topic
Post Conjunction: Santa Maria to Cape York, The Journey to 'Spirit Point'
CosmicRocker
post May 3 2011, 04:24 AM
Post #286


Senior Member
****

Group: Members
Posts: 2228
Joined: 1-December 04
From: Marble Falls, Texas, USA
Member No.: 116



QUOTE (Phil Stooke @ May 2 2011, 04:33 AM) *
... That's not the same map at a variety of scales - you can't deduce anything from one regarding the other.

Phil: You are the map expert here and I don't want to argue with you about maps (because I'll probably lose that argument). I will admit that I had assumed the various published maps were all based on the same map, because the colors used for the various units are identical. I don't *know* that they are the same map at various scales, but it certainly seemed like a reasonable assumption to me. You state, "That's not the same map at a variety of scales." Do you *know* that to be true?


--------------------
...Tom

I'm not a Space Fan, I'm a Space Exploration Enthusiast.
Go to the top of the page
 
+Quote Post
CosmicRocker
post May 3 2011, 05:05 AM
Post #287


Senior Member
****

Group: Members
Posts: 2228
Joined: 1-December 04
From: Marble Falls, Texas, USA
Member No.: 116



QUOTE (elakdawalla @ May 2 2011, 11:14 AM) *
... you'll know what I mean when I say that CT on many geologic maps of Mars is sort of equivalent to Qf on Earth geologic maps. It's the crap that gets in the way of us seeing what's going on with the bedrock. Anything exposed in crater walls is usually too small in spatial extent to be mapped intelligently; CT covers the crater and its ejecta that obscure what was going on underneath, just like Quaternary fill obscures geology in Earth's valley floors.

That's really a pretty good way to describe it, Emily. As an avid reader of your blog, I can say that you have quite a talent for describing obscure things in ways that are very assimilable. smile.gif


--------------------
...Tom

I'm not a Space Fan, I'm a Space Exploration Enthusiast.
Go to the top of the page
 
+Quote Post
peter59
post May 3 2011, 07:25 AM
Post #288


Member
***

Group: Members
Posts: 568
Joined: 20-April 05
From: Silesia
Member No.: 299



Waiting for full resolution.
Attached Image


--------------------
Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html
Go to the top of the page
 
+Quote Post
Stu
post May 3 2011, 09:43 AM
Post #289


The Poet Dude
****

Group: Moderator
Posts: 5551
Joined: 15-March 04
From: Kendal, Cumbria, UK
Member No.: 60



That's really good work, Peter.

Wider angle view, made from thumbnails again...

http://twitpic.com/4sqhvw/full


--------------------
Go to the top of the page
 
+Quote Post
Phil Stooke
post May 3 2011, 02:14 PM
Post #290


Solar System Cartographer
****

Group: Members
Posts: 10127
Joined: 5-April 05
From: Canada
Member No.: 227



"Do you *know* that to be true?"

The use of similar color schemes makes it look like they are the same map, but this is misleading. Obviously there is something in common between them as well, but they are not the same.

First, they are very different scales, so it's not just a case of the same digital image being shown in full and in an enlarged detail, which was really what I meant at first. As different map images, the color schemes don't have to mean exactly the same thing. More importantly, though, different scales mean (in this case) different levels of generalization. The regional view (Miyamoto map) aggregates all the Meridiani plains material into one unit. The detailed map of Cape York splits that into multiple units - including the hydratyed material and terraces. The green things are confused by the cartographer - in the regional map they use green for two different things, Bololu materials (mostly ejecta, a specific geologic unit) and a morphological class of feature, the post-Noachian craters. Note how the green is in the crater depressions, not the ejecta deposits of those craters. In the detailed map green is used again for morphology - crater depressions, some extremely subdued and, frankly, geologically indistinguishable from the material they formed in. And if you look at Endeavour in the regional map, the blue Noachian material is not just shown on the hills of the rim but as a complete ring around the crater, looking like the inner slope of Endeavour. The detailed map correctly maps the inner slope below Cape York as the red plains material and related units.

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
Tesheiner
post May 4 2011, 10:35 AM
Post #291


Senior Member
****

Group: Moderator
Posts: 4279
Joined: 19-April 05
From: .br at .es
Member No.: 253



This images pipeline is still somehow broken so we'll have to continue with the "minimalist" mode. Here are yestersol (2585) navcam pictures assembled on a mini-mosaic and a mini-polar-view.
Attached Image

Attached Image
Go to the top of the page
 
+Quote Post
Burmese
post May 4 2011, 07:38 PM
Post #292


Member
***

Group: Members
Posts: 252
Joined: 27-April 05
Member No.: 365



Long ago the MER team realized they needed to alternate forward and reverse driving to keep lubricants better distributed in the wheels, but when they they decide that the healthiest thing for Oppy was to do 95% backwards driving?
Go to the top of the page
 
+Quote Post
djellison
post May 4 2011, 09:08 PM
Post #293


Founder
****

Group: Chairman
Posts: 14431
Joined: 8-February 04
Member No.: 1



The FR wheel starts drawing a lot more current if they drive forwards. Driving backwards, it's elevated above the others, but not as much and not in an upwardly trending way.

It would have been a few months after Victoria they made the switch I think.
Go to the top of the page
 
+Quote Post
Phil Stooke
post May 4 2011, 09:17 PM
Post #294


Solar System Cartographer
****

Group: Members
Posts: 10127
Joined: 5-April 05
From: Canada
Member No.: 227



There are new pictures of Freedom 7 up at JPL, but still not at the Exploratorium.

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
walfy
post May 4 2011, 09:21 PM
Post #295


Member
***

Group: Members
Posts: 404
Joined: 5-January 10
Member No.: 5161



NASA's update, with good image of the new crater: http://www.jpl.nasa.gov/news/news.cfm?rele...mp;auid=8289598
Go to the top of the page
 
+Quote Post
Den
post May 4 2011, 10:55 PM
Post #296


Junior Member
**

Group: Members
Posts: 59
Joined: 12-November 09
Member No.: 5039



Admin: A series of posts moved from Oppy Map thread.

Did some forum archaeology and found this from pre-Victoria days:

QUOTE (djellison @ Apr 10 2006, 07:43 AM) *
QUOTE (imran @ Apr 10 2006, 04:55 AM) *

Call me crazy, but this is what I think should happen assuming Oppy never dies.
<<a map with "wild dream" how Oppy would drive to Endeavor>>

You're crazy.
(well, you did ask)
Seriously - you're talking 6+ x the current traverse distance. Even with a grad-student-controlled 3 wheel drive rover in 5 years time - that's just not going to happen.


laugh.gif
Go to the top of the page
 
+Quote Post
djellison
post May 4 2011, 10:58 PM
Post #297


Founder
****

Group: Chairman
Posts: 14431
Joined: 8-February 04
Member No.: 1



And Squyres would have told you the rovers would be dead after 120, maybe 150 sols.

I'm in good company.

You will also see that over time, I come around to the idea.
Go to the top of the page
 
+Quote Post
Stu
post May 4 2011, 11:20 PM
Post #298


The Poet Dude
****

Group: Moderator
Posts: 5551
Joined: 15-March 04
From: Kendal, Cumbria, UK
Member No.: 60



I was absolutely sure there was no frakking way in a dozen different hells that Oppy could possibly make it to Endeavour, too. Not a lack of faith in the rover, or her team, just a stronger faith in eeeevil Mars to do its damndest to kill Oppy before she even got half way.

Very glad to have been proved wrong. laugh.gif


--------------------
Go to the top of the page
 
+Quote Post
brellis
post May 4 2011, 11:57 PM
Post #299


Member
***

Group: Members
Posts: 754
Joined: 9-February 07
Member No.: 1700



Question for the very talented and skilled folks stitching together these wonderful images: is it easier to work with thumbnails or lower res images than the larger images? Can you substitute the high res images onto your work on the thumbs?

I'm guessing YES and YES. smile.gif

Edit: definitely easier on the clock due to smaller file sizes, but how 'bout on a superfast computer?
Go to the top of the page
 
+Quote Post
nprev
post May 5 2011, 12:08 AM
Post #300


Merciless Robot
****

Group: Admin
Posts: 8783
Joined: 8-December 05
From: Los Angeles
Member No.: 602



Superior design inevitably results in superior performance. There should be an entire systems engineering textbook written about the MER design...hmm...maybe I just invented a project for myself... rolleyes.gif


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

104 Pages V  « < 18 19 20 21 22 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 28th March 2024 - 10:57 PM
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.