Mars Exploration Rover Update: September 19-24, 2008
- From: baalke@xxxxxxxxxxxxx
- Date: Fri, 3 Oct 2008 15:31:38 -0700 (PDT)
http://marsrovers.jpl.nasa.gov/mission/status.html#opportunity
OPPORTUNITY UPDATE: Road Trip Gets Under Way - sol 1655-1660,
September 19-24, 2008:
Opportunity has embarked on the next great challenge -- a journey of
12
kilometers (7.5 miles) southeast to a huge hole in the ground
nicknamed
"Endeavour Crater." Measuring 22 kilometers (14 miles) from rim to rim
and plunging 300 meters (1,000 feet) below the surface, Endeavour
Crater
is significantly larger than "Victoria Crater," which is 730 meters
(almost half a mile) wide and 70 meters (200 feet) deep. Because it is
so much deeper, Endeavour promises to expose even more rock layers
going
further back in time.
Opportunity's trek began on sol 1659 (Sept. 23, 2008), as the rover
backed away from a slippery ripple and advanced 10 meters (30 feet)
toward its destination. The journey to Endeavour will be long.
Opportunity is sure to encounter many interesting science
opportunities
along the way.
During the previous week, Opportunity's wheels slipped excessively
while
trying to cross a ripple to reach a patch of dust on the ripple's
downwind side. After two tries on sols 1652 (Sept. 16, 2008) and 1654
(Sept. 18, 2008), rover operators decided to resume driving and look
for
other deposits of Martian dust in more accessible locations.
Opportunity remains healthy. All subsystems are performing as expected
as of Martian day, or sol, 1660 (Sept. 24, 2008). Power is on the
rise,
with sunlight generating 623 watt-hours of solar energy -- enough to
light a 100-watt bulb for more than 6 hours (100 watt-hours is the
amount of energy needed to light a 100-watt bulb for one hour.)
Sol-by-sol summary:
Besides measuring daily, dust-related changes in atmospheric clarity
with the panoramic camera, Opportunity completed the following
activities:
Sol 1655 (Sept. 19, 2008): Opportunity acquired full-color images,
using
all 13 filters of the panoramic camera, of a target dubbed "Velvet."
Opportunity took images of the tracks made by the rover's wheels with
the navigation camera.
Sol 1656: Opportunity acquired a 5-by-1 panel of images with the
navigation camera and a 10-by-1 panel of images with the panoramic
camera. After relaying data to NASA's Odyssey orbiter as it passed
overhead for transmission to Earth, Opportunity measured atmospheric
dust at sunset with the panoramic camera. The rover measured argon gas
in the Martian atmosphere with the alpha-particle X-ray spectrometer.
Sol 1657: In the morning, Opportunity monitored dust on the
panoramic-camera mast assembly. The rover took panoramic-camera images
of its tracks and, after sending data to Odyssey, measured atmospheric
argon with the alpha-particle X-ray spectrometer.
Sol 1658: Following several measurements of atmospheric dust at
different times of day, Opportunity relayed data to Odyssey and used
the
alpha-particle X-ray spectrometer to determine the amount of
atmospheric
argon.
Sol 1659: In the morning, Opportunity took thumbnail images as well as
spot images of the sky for calibration purposes with the panoramic
camera. Opportunity then began the trek to Endeavour, driving almost
10.5 meters (34 feet). The rover acquired images of the surrounding
terrain with the navigation camera just before and just after ending
the
drive. After sending data to Odyssey, the rover measured atmospheric
argon.
Sol 1660 (Sept. 24, 2008): Opportunity surveyed the morning horizon
with
the panoramic camera and acquired six, time-lapse movie frames in
search
of clouds with the navigation camera. At high Sun, Opportunity
surveyed
the sky with the panoramic camera. Before relaying data to Odyssey,
Opportunity took images of the rover's wheel tracks with the panoramic
camera.
Odometry:
As of sol 1659 (Sept. 23, 2008), Opportunity's total odometry was
11,808.39 meters (7.34 miles).
.
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