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TOPIC: The Opportunity rover


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The interior of Victoria crater
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The interior of Victoria crater, Mars.


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Credit NASA

Image taken by Opportunity on Sept 27, 2006 ( sol 951).

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RE: The Opportunity rover
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NASA's Mars rover Opportunity edged 3.7 metres closer to the top of the "Duck Bay" alcove along the rim of "Victoria Crater" during the rover's 952nd Martian day, or sol (overnight Sept. 27 to Sept. 28), and gained this vista of the crater. The rover's navigation camera took the seven exposures combined into this mosaic view of the crater's interior. This crater has been the mission's long-term destination for the past 21 Earth months.

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The far side of the crater is about 800 meters (one-half mile) away. The rim of the crater is composed of alternating promontories, rocky points towering approximately 70 metres above the crater floor, and recessed alcoves, such as Duck Bay. The bottom of the crater is covered by sand that has been shaped into ripples by the Martian wind. The rocky cliffs in the foreground have been informally named "Cape Verde," on the left, and "Cabo Frio," on the right.

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Victoria Crater
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NASA Mars Rover Arrives at Dramatic Vista on Red Planet

NASA's Mars Rover Opportunity has arrived at the rim of a crater approximately five times wider than a previous stadium-sized one it studied for half a year.
Initial images from the rover's first overlook after a 21-month journey to "Victoria Crater" show rugged walls with layers of exposed rock and a floor blanketed with dunes. The far wall is approximately one-half mile from the rover.

"This is a geologist's dream come true, Those layers of rock, if we can get to them, will tell us new stories about the environmental conditions long ago. We especially want to learn whether the wet era that we found recorded in the rocks closer to the landing site extended farther back in time. The way to find that out is to go deeper, and Victoria may let us do that" - Steve Squyres of Cornell University, Ithaca, N.Y., principal investigator for NASA's twin rovers Opportunity and Spirit.

Opportunity has been exploring Mars since January 2004, more than 10 times longer than its original prime mission of three months. It has driven more than 5.7 miles. Most of that was to get from "Endurance" crater to Victoria, across a flat plain pocked with smaller craters and strewn with sand ripples. Frequent stops to examine intriguing rocks interrupted the journey, and one large sand ripple kept the rover trapped for more than five weeks.

"We're so proud of Opportunity, the rover that 'takes a lickin' but keeps on tickin'. It continues to overcome all challenges despite its aging parts and difficult terrain. We are looking forward to exciting new discoveries as Opportunity begins its new adventure exploring Victoria crater" - Cindy Oda, a Mars rover mission manager at NASA's Jet Propulsion Laboratory (JPL), Pasadena, California.

Spirit, halfway around Mars and farther south of the planet's equator, has been staying at one northward-tilted position through the southern Mars winter for a maximum energy supply for its solar panels. Spirit is conducting studies that benefit from staying in one place, such as monitoring effects of wind on dust. It will begin driving again when the Martian spring increases the amount of solar power available.
Operations for both rovers will be minimised for much of October as Mars passes nearly behind the sun from Earth's perspective, making radio communication more difficult than usual.

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Image of Victoria crater taken by the Opportunity rover on Sept 26, 2006 ( Sol 950)

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Credit NASA

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The 1st colour image of Victoria craters far rim, taken by the Opportunity rover on Sept 24-26, 2006 ( sol 948-950)

victoriacrater-560

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Opportunity Sept 23, 2006 ( sol 947)


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Opportunity image from Sol 947

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OPPORTUNITY UPDATE: Nearly There! - sol 941-946, September 22, 2006:

Opportunity is healthy and very near "Victoria Crater." The rover spent its week completing an alpha particle X-ray spectrometer observation of rock target "Cape Faraday," successfully booting its new flight software and exercising its mobility functions.
Opportunity is currently a little over 45 metres away from Victoria Crater's "Duck Bay" - a point on Victoria's vast rim. Once the team has verified that the new onboard flight software is stable, Opportunity will drive out to Duck Bay. This location is expected to provide Opportunity a spectacular view of the crater's interior.

Sol-by-sol summaries:

Sol 941 (Sept. 16, 2006): In the morning, the panoramic camera imaged areas of the sky and looked for clouds. The miniature thermal emission spectrometer observed the sky and ground. Opportunity completed several panoramic camera assessments of the clarity of the atmosphere. The panoramic camera also surveyed the ground and imaged the soil target "Dellinbaugh," within the crater dubbed "Emma Dean." Parameters for the robotic arm were tested with the new flight software. The alpha particle X-ray spectrometer completed an observation of Cape Faraday.

Sol 942: This morning, the rover's panoramic camera imaged parts of the Martian sky and the miniature thermal emission spectrometer collected data from the sky and ground. Opportunity assessed the clarity of the atmosphere with a panoramic camera "tau" measurement. That camera also imaged the rover magnets to monitor dust and had a look at the horizon. The miniature thermal emission spectrometer completed a sky and ground observation and checked its calibration target. Before the communications pass with NASA's Mars Odyssey orbiter, the rover completed another tau measurement. During the pass, the miniature thermal emission spectrometer was used.

Sol 943: Opportunity drove about 35 metres, paused and took a mid-drive navigation camera mosaic of the crater dubbed "Kitty Clyde's Sister." The rover then drove another 25 metres and took images with the hazard avoidance cameras. After the drive, the navigation camera and panoramic camera took images from the rover's new location. The panoramic camera was also used this sol to image parts of the sky and the miniature thermal emission spectrometer took measurements of the sky and ground.

Sol 944: This sol was dedicated to booting flight software and ensuring that imaging and data-product parameters were functioning properly with the new software.

Sol 945: This sol was used to update mobility parameters for the new flight software. Some remote sensing science was completed.

Sol 946 (Sept. 21, 2006): The rover performed remote sensing science.

As of sol 943 (Sept. 18, 2006) Opportunity's odometry total is 9,192.05 metres.

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Emma Dean crater
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Opportunity rover tracks leading from Emma Dean crater on Meridiani Plain.
This image was taken by Opportunity on Sept 19, 2006 ( sol 943)


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-- Edited by Blobrana at 00:25, 2006-09-22

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RE: The Opportunity rover
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Location of Opportunity on Sol 943 ( Sept 19, 2006).


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