Mars Exploration Rover Update - March 23, 2007
- From: baalke@xxxxxxxxxxxxx
- Date: 29 Mar 2007 08:44:30 -0700
http://marsrovers.jpl.nasa.gov/mission/status.html
SPIRIT UPDATE: Spirit Studies Rocks in Vicinity of "Home Plate" - sol
1141-1144, March 23, 2007:
Spirit remains healthy and spent much of the week studying a new rock
target on "Mitcheltree Ridge" called "Torquas." Scientists are trying
to
understand what relationship Mitcheltree Ridge has to "Home Plate" --
for example, whether it is an extension of Home Plate or an entirely
different rock layer, and whether it has similar composition or
morphology.
Torquas is nicknamed after a dried-up seabed covered with moss in the
Barsoom science fiction saga by Edgar Rice Burroughs.
Sol-by-sol summary:
In addition to daily observations of atmospheric dust levels and
surveys
of the sky and ground with the miniature thermal emission
spectrometer,
Spirit conducted the following activities:
Sol 1141 (March 20, 2007): Spirit acquired panoramic camera images of
Torquas, nudged closer to the outcrop, took post-drive images with the
navigation camera, acquired images of the sky with the panoramic
camera,
and watched for dust devils.
Sol 1142: This was a runout sol, or Martian day, meaning the rover
completed pre-loaded activities resulting from an only partially
successful uplink of new instructions. The uplink was only partially
successful because the rover's best-lock frequency was out of range.
Runout activities included monitoring atmospheric dust, measuring
light
looking east and west, imaging the calibration target, and taking
thumbnail images of the sky.
Sol 1143: Spirit acquired a 360-degree panorama of images with the
navigation camera, stereo microscopic images of Torquas prior to
brushing the surface with the rock abrasion tool, and more stereo
images
after brushing the rock. The rover placed the alpha-particle X-ray
spectrometer on the rock and then collected data using the instrument.
Sol 1144 (March 23, 2007): Spirit's first planned task was to acquire
panoramic images of Mitcheltree Ridge. Other planned activities
included
studies of Torquas using the Moessbauer spectrometer, surveys of
layered
outcrops known as "Zanor," "Banth," "Okar," and "Dor" using the
miniature thermal emission spectrometer, and photometric measurements
using the panoramic camera.
Odometry:
As of sol 1142 (March 21, 2007), Spirit's total odometry was 7,046
meters (4.38 miles).
.
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