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antoniseb
2005-Jul-05, 03:14 PM
There are some tough paths to explore on the way South.

http://marsrovers.jpl.nasa.gov/gallery/all...XKP2430R2M1.JPG (http://marsrovers.jpl.nasa.gov/gallery/all/1/p/512/1P173638000EFF55XKP2430R2M1.JPG)

aeolus
2005-Jul-05, 10:49 PM
How low if Oppy's COG? Might they try to ascend these ridges by scaling it across the grade, back and forth?

antoniseb
2005-Jul-05, 11:23 PM
Originally posted by aeolus@Jul 5 2005, 10:49 PM
How low if Oppy's COG? Might they try to ascend these ridges by scaling it across the grade, back and forth?
The problem is that these are all made of the same stuff that the dune they got stuck in is made of. The center of gravity isn't much of an issue here.

Spacemad
2005-Jul-10, 09:34 PM
All those dunes look like a formidable obstacle to the Rover's progress! If they are essentially the same material as the dune where it was stuck for several weeks, might it not be wiser not to try scaling them - in case the same happens again? Or has NASA figured out a way to overcome the problem? :unsure:

suntrack2
2005-Jul-11, 10:04 AM
or it is running on the mars surface in "disappear mode" !

WitheringIntuition
2005-Jul-12, 06:36 AM
Originally posted by suntrack2@Jul 11 2005, 06:04 AM
or it is running on the mars surface in "disappear mode" !
Duh. It's been in "dissappear mode" for a good couple of years now. ;) I remember when I was a kid (like 7 years ago lol) my father bought me a remote controlled Mars lander. It was the greatist toy I ever got. Though, it would get stuck in the weirdest places. Placest that aren't even hard to overcome. Like, it'd get stuck on a tiny stick, or something. This might be what's happening to the rover on Mars. It's probably getting stuff on easy obstacles. Maybe they could make a larger rover (with larger wheels of course), that might be able to overcome these obstacles.

suntrack2
2005-Jul-12, 01:03 PM
that's coool withering! great intuition.

antoniseb
2005-Jul-14, 01:24 PM
Once again we are at a point where the two Rovers have not had an image update in over a week, and Steve Squyres has not updated his blog in two weeks. This must be a vacation time for some of the people who maintain the website for this project.

antoniseb
2005-Jul-18, 12:58 PM
In his blog Steve Squyres says that Opportunity has gone South about 90 meters, and seems to be in a better area for travelling. They are currently going through the troughs of the dunes, and going across a dune when the trough runs out. The troughs are not running in quite the right direction to get them to the big crater, but they'll deal with that once they get down there. Some of the terrain around the crater seems to be exposed bedrock, which should be a snap for the rover to speed across.

antoniseb
2005-Jul-20, 01:25 PM
Can anyone tell me how far Opportunity is from Erebus Crater? Squyres' blog says that they are making good progress now heading in that direction, but I can't see obvious signs of the crater rim in the panoramic or navigational images, so it must still be a good distance away.

It has been a long time since the Mars rover website has posted a Satellite image with the path so far superimposed on it. I'd kind of like a reality check on where the rover is right now. (Likewise for Spirit and its climb up Husband Hill).

Spacemad
2005-Jul-20, 09:06 PM
Originally posted by antoniseb@Jul 20 2005, 01:25 PM

It has been a long time since the Mars rover website has posted a Satellite image with the path so far superimposed on it. I'd kind of like a reality check on where the rover is right now. (Likewise for Spirit and its climb up Husband Hill).

You're quite right, Anton. It has been quite a while - I saved the last two to include in my webpage, which I'm presently updating. Like you I'd like to see a couple of more up to date maps with their positions marked - it gives a sense of achievement & makes what you are seeing about the Rovers more sense.

antoniseb
2005-Jul-27, 05:44 PM
The Mars MER Rover website has added a feature that has frequently updated maps of where the rovers are.

Here's the most recent one for Opportunity.
http://marsrovers.jpl.nasa.gov/mission/tm-.../MERB_528_2.jpg (http://marsrovers.jpl.nasa.gov/mission/tm-opportunity/images/MERB_528_2.jpg)

Note, this hasn't been updated for about eight days (It's now Sol 536).

It looks like they are about three weeks away from Erebus Crater.

antoniseb
2005-Jul-28, 01:56 PM
Can we see hints of the rim of Erebus Crater in this image taken earlier today?

http://marsrovers.jpl.nasa.gov/gallery/all...KRP2443L2M1.JPG (http://marsrovers.jpl.nasa.gov/gallery/all/1/p/536/1P175772634EFF57KRP2443L2M1.JPG)

Joff
2005-Jul-28, 06:39 PM
You mean just the roughness on the horizon? Could be. The horizon in other directions is pretty smooth.

I guess we're looking for something different to Endurance with its beautiful big rim. To me, Erebus always looked like a very worn-down crater from the orbiter photographs.

antoniseb
2005-Jul-28, 06:47 PM
Originally posted by Joff@Jul 28 2005, 06:39 PM
Erebus always looked like a very worn-down crater from the orbiter photographs.
Yes, though it seems to have some deeper and accessible walls, which will hopefully show us deeper layers than we saw in the other craters. It could be that Opportunity will be allowed to die in that crater, but if not, I expect it will be there till near the end of this year. Then where does it go? What new science objectives are accessible?

ToSeek
2005-Jul-28, 09:36 PM
According to the latest Flight Director's Update (http://www.jpl.nasa.gov/missions/mer/flightdir.cfm), Opportunity will be about 150 meters from Erebus after the end of the sol corresponding to the commands uploaded on Tuesday. That's about 5 days' travel at the rate it's been going.

antoniseb
2005-Jul-29, 03:01 PM
Originally posted by ToSeek@Jul 28 2005, 09:36 PM
According to the latest Flight Director's Update...
Thanks for the pointer ToSeek, somehow that link had escaped me till now. I can't watch videos like that at work, and had to wait till last night to see it.

antoniseb
2005-Jul-30, 08:55 PM
I should have been looking around for other web resources about the Mars Rovers, there are lots of them.

Here's an image showing Opportunity's location a few months ago in its relationship with Erebus crater (where it is now roughly), and Victoria Crater about a mile further South (perhaps the final destination if the rover can climb the dust piles around the rim of Victoria.

http://upload.wikimedia.org/wikipedia/en/a...413_All-med.jpg (http://upload.wikimedia.org/wikipedia/en/a/a0/MERB_Map_413_All-med.jpg)

Here's a forum specifically about Mars, with a heavy emphasis on these rovers:
http://www.markcarey.com/mars/mars-forum/forum.html

And of course, the official NASA site.
http://marsrovers.jpl.nasa.gov/home/

ToSeek
2005-Jul-31, 03:14 AM
The best rover discussion forum is here:

http://www.unmannedspaceflight.com/

They're kind of coy about it, but a close reading of some of the discussions makes it clear that some of those involved are actually JPL people working on the rovers.

Joff
2005-Aug-19, 09:26 PM
That's a great link, ToSeek. The Oppotunity roadmap thread is particularly good and their stretched view of the horizon seem almost to give you over-the-horixon capability

burmese
2005-Aug-22, 12:38 PM
Yes, new developments in the Rovers' progess, as well as some facinating analysis seems to always pop up there 1st. They do go a little overboard on their stitching tools, though, and many interesting threads degenerate into technical discussions of how to create a new visual effect with the raw photos.

antoniseb
2005-Aug-26, 05:50 PM
There are some people over on another forum (Unmannedspaceflight) who are doing great things with the images from the rovers. Here's a synthesized image showing where Opportunity is in relation to its next intended destinations:

http://www.unmannedspaceflight.com/index.p...pe=post&id=1289 (http://www.unmannedspaceflight.com/index.php?act=Attach&type=post&id=1289)

suntrack2
2005-Aug-28, 05:08 PM
interesting picture antoniceb, the search must go on.

Jerry
2005-Aug-28, 06:42 PM
At the first of the year, Opportunity spent quite a bit of time analysing the heat shield. Anyone aware of any reports on the results of the inspection?

Spacemad
2005-Aug-28, 09:28 PM
The two Mars Rovers, Spirit & Opportunity between them have now clocked up more than 500 days or Sols on Mars.

Spirit has now reached the top of Husband Hill & has taken some nice images of Gusev Crater.

Here is the NASA Mars Rovers Status Report for 19 August 2005: http://www.spaceref.com/news/viewsr.html?pid=17847

antoniseb
2005-Aug-28, 10:38 PM
Originally posted by The Messenger@Aug 28 2005, 06:42 PM
Anyone aware of any reports on the results of the inspection?
I looked carefully at the images. I didn't know to look for anything in particular, but the textures were interesting. I never noticed any official report on the topic.