Rover Sets Mars Distance Record (Spirit)

BBC ^ | 2-10-2004

[blam]

Rover sets Mars distance record

Spirit can navigate over yellow and green colored terrain, but not red.

The US space agency's robotic Mars explorer Spirit has broken a record for the distance travelled by a robot rover in one day on the Martian surface. Spirit travelled nearly 21 metres (70 feet) across the rock-strewn surface of Gusev Crater, where it is looking for past or present signs of liquid water.

Scientists said Spirit's twin rover Opportunity had experienced slips during 50% of its drive on Tuesday.

This is thought to be due to loose soil at its Meridiani Planum landing site.

Spirit's drive was more than three times the longest distance covered in one day by Nasa's Sojourner rover, which landed on Mars in 1997.

Spirit drove "blind" for about half the distance, following a planned route to a stopping point.

For the second half of the trip, it drove to a second stopping point, executed a turn and then rolled onward before stopping.

Spirit creates a map of the terrain in front of it, dividing it into green, yellow and red areas based on how easy it perceives that terrain is to traverse.

The rover can navigate over yellow and green coloured terrain, but not red.

Command test

The trip, intended to test driving commands, was a success.

Over the weekend, Spirit drilled its first artificial hole in a rock - the football-sized Adirondack - and took readings from it using the science instruments on its robotic arm.

Before leaving Adirondack, Spirit took images and collected miniature thermal emission spectrometer (Mini-Tes) data from the hole it ground with its rock abrasion tool (Rat).

It will now investigate another rock called White Boat.

Later on in its mission, Spirit will investigate a large crater at its Gusev Crater landing site called Bonneville Crater.

On Tuesday morning engineers played Spirit's twin rover Opportunity a lighthearted wake-up call: the song Slip Sliding Away by Paul Simon.

Opportunity made it across four metres (12 feet) on its drive and is now poised to continue observing parts of the rocky outcrop that sticks out of the crater where it has landed.

It will begin close-up observation of the bedrock today (Tuesday).

The rover will drive up, down and inside the rim of the crater taking images of the outcrop as it goes, a procedure known as "scoot and shoot".

[RightWhale]

The surface appears to be very soft, including the rocks, and the Rover is climbing to get out of the crater. There would be a limit to how steep a slope it could climb considering the size of the wheels and the depth of the 'tread.'

[kanawa]

I've enjoyed your stereo images.

I started out using an envelop to divide the image, one for each eye.
Now, after some practice, I can see the image without any aids.

[New Horizon]

All right...I have been crossing my eyes and doing things with my fingers and everything else I can think of and just am not getting the stereo-3D thing going.

Any suggestions?

[blam]

"The surface appears to be very soft, including the rocks, and the Rover is climbing to get out of the crater. There would be a limit to how steep a slope it could climb considering the size of the wheels and the depth of the 'tread.'"

Yup. I was thinking something like that myself.

[Aracelis]

Try moving back from your screen and then crossing your eyes until you have 3 frames instead of 2. Then tilt your head a little from side to side until the photos mesh.

[Phil V.]

"these blue spheres"

Please cite authorative source for color, "blue".

Photoshop?

[Phil V.]

Any suggestions?

Keep practicing with the tip I've given in #19. Try first at the bottom of the stereo strip with the "floating rock".

It's taken me many attempts, but once the eyes "learn" the trick it becomes easier and easier.

[Phil V.]

I've graduated!!!!

[Aracelis]

:^)

[Phil V.]

try these . . .

 

[Phil V.]

Please supply a link to support your assertion of NASA's/JPL's "true color".

[Aracelis]

Interesting, but it makes for an uncomfortably skinny 3D strip. My mind keeps searching for additional images.

[Aracelis]

Sigh! Back to studying...

[solitas]

Not very good - too much disparity between frames when you get close to the camera, and not enough overlap with these two strips.

btw: what IS that shiny vertical dealie on the robot anyway?

[solitas]

"true color"? With all that blue around that spotface on the rock? Please: instruct me in my error, but I...don't think so.