IPB

Welcome Guest ( Log In | Register )

17 Pages V   1 2 3 > »   
Reply to this topicStart new topic
To the Cape! (part 2), For real this time!
Tesheiner
post Jun 13 2008, 08:10 AM
Post #1


Senior Member
****

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



This is a navcam mosaic taken after driving during sol 1559.
Attached Image


Mmm, remember the name of this thread?
To the Cape! Yeah! biggrin.gif
Go to the top of the page
 
+Quote Post
MahFL
post Jun 13 2008, 10:38 AM
Post #2


Forum Contributor
****

Group: Members
Posts: 1372
Joined: 8-February 04
From: North East Florida, USA.
Member No.: 11



They are nice pictures. Makes a change to see something new after so many months.
Go to the top of the page
 
+Quote Post
fredk
post Jun 13 2008, 03:16 PM
Post #3


Senior Member
****

Group: Members
Posts: 4245
Joined: 17-January 05
Member No.: 152



It's great to see us thoroughly out of the Quackmire! We now have a good view of potential approaches to Verde. Here's a crop from Tesheiner's mosaic. I've sketched two approaches that appear to stay pretty well on solid rocky surfaces. The black gets us close to the cliff, but not very deep - we've studied those layers already. The white route gets us deeper but not very close to the cliff. Of course they could continue past the end of the white arrow (that's where the original target lies), at the risk of getting bogged down again in loose soil...
Attached Image
Go to the top of the page
 
+Quote Post
Tesheiner
post Jun 13 2008, 08:56 PM
Post #4


Senior Member
****

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



Before the, mmm, "event", I thought Opportunity would move to a point that is after the white arrow. I think the terrain at that point is traversable enough to get the rover touching the wall.
BUT the situation now has changed. At least two new issues. imo. The first is obviously the fact(?) that moving up to the wall would mean getting stuck again on the way back. The second is that after this long time the shadows are getting bigger at Cape Verde.
Go to the top of the page
 
+Quote Post
alan
post Jun 13 2008, 11:24 PM
Post #5


Senior Member
****

Group: Members
Posts: 1887
Joined: 20-November 04
From: Iowa
Member No.: 110



Winter Solstice occurs in the southern hemisphere of Mars on June 26 so the shadows will soon start getting shorter.
Go to the top of the page
 
+Quote Post
Tesheiner
post Jun 16 2008, 09:43 AM
Post #6


Senior Member
****

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



Neither the black not the white path, Opportunity has followed the "yellow bricks".
Here's the current position plotted on the navcam mosaic from sol 1559.
Attached Image


And the latest view from tosol (1562).
Attached Image
Go to the top of the page
 
+Quote Post
Astro0
post Jun 17 2008, 06:56 AM
Post #7


Senior Member
****

Group: Admin
Posts: 3108
Joined: 21-December 05
From: Canberra, Australia
Member No.: 615



A lo-res SFX view based on Tesheiner's positioning.
Attached Image

Steady as she goes girl smile.gif
Go to the top of the page
 
+Quote Post
Tman
post Jun 17 2008, 07:50 AM
Post #8


Member
***

Group: Members
Posts: 877
Joined: 7-March 05
From: Switzerland
Member No.: 186



And overcomes sand traps again and chocks like this:
http://qt.exploratorium.edu/mars/opportuni...25P1815R0M1.JPG

Guess the two moved rocks is the spot where Oppy's middle wheel went stuck.


--------------------
Go to the top of the page
 
+Quote Post
Tesheiner
post Jun 17 2008, 10:11 AM
Post #9


Senior Member
****

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



I was a bit afraid with the path they were taking now (the "yellow" one), but have a look to today's drive results and compare with yesterday images.
Attached Image Sol 1562 -> Sol 1563 Attached Image

They moved Opportunity downhill over the sand up to the isolated slab seen on the images then back uphill almost to the same spot as before. Looking to the wheel marks I fell that the terrain is much more stable then on the previous path where she got stuck.
Go to the top of the page
 
+Quote Post
climber
post Jun 17 2008, 11:21 AM
Post #10


Senior Member
****

Group: Members
Posts: 2917
Joined: 14-February 06
From: Very close to the Pyrénées Mountains (France)
Member No.: 682



You may say that it's easy to say it now, but it seams they are driving the way I thought they will.
Rove straight down, back-up to be sure you can (back-up), and so on.
Once they are perpendicular and deaper to the place they want to meet the cliffs, they will do a ~80° + ~80° or so left turns and go up to the cliffs. Doing this, in case of been stuck, the'll can back up going down (on the same path) which will probably be much easier to get free. Any objection to this ?


--------------------
Go to the top of the page
 
+Quote Post
Stu
post Jun 17 2008, 02:14 PM
Post #11


The Poet Dude
****

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



Nice view...

Attached Image


--------------------
Go to the top of the page
 
+Quote Post
fredk
post Jun 17 2008, 02:53 PM
Post #12


Senior Member
****

Group: Members
Posts: 4245
Joined: 17-January 05
Member No.: 152



QUOTE (Tesheiner @ Jun 17 2008, 10:11 AM) *
Looking to the wheel marks I fell that the terrain is much more stable then on the previous path where she got stuck.

It does look like a successful toe-dip. After the quackmire, I'm still concerned about the sandy surface farther down. I wonder if they've been able to identify something about the appearance of the quackmire surface before we drove onto it that indicated it was dangerous. Or are they just trying again and hoping for the best...

Climber, it seems to me it's got to be risky to drive deeper than we need to...
Go to the top of the page
 
+Quote Post
mhoward
post Jun 18 2008, 12:38 AM
Post #13


Senior Member
****

Group: Moderator
Posts: 3431
Joined: 11-August 04
From: USA
Member No.: 98



QUOTE (Astro0 @ Jun 17 2008, 12:56 AM) *
A lo-res SFX view based on Tesheiner's positioning.


That looks about right, Astro0. I was digging around in MMB for some views from other perspectives and found this one. The position based on the tracking data is only approximate, but actually it looks about right to me:

Go to the top of the page
 
+Quote Post
Tesheiner
post Jun 18 2008, 10:17 AM
Post #14


Senior Member
****

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



We are getting closer!
This is from today's drive (sol 1564):
Attached Image
Go to the top of the page
 
+Quote Post
fredk
post Jun 18 2008, 02:56 PM
Post #15


Senior Member
****

Group: Members
Posts: 4245
Joined: 17-January 05
Member No.: 152



And the maneuvering at the end of the drive shows we've still got good traction:
http://qt.exploratorium.edu/mars/opportuni...74P1312R0M1.JPG
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 - 03:33 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.