One month after launch, the James Webb Space Telescope ...
arrived at its orbital destination.
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Webb will perform its science mission while orbiting ...
a location in space, called the second Lagrange point, ...
or L2 for short ...
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It is located one million miles from Earth.
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As Webb orbits L2, the telescope stays in line with Earth ...
as it travels around the Sun.
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L2 is a point where the gravitational influences of ...
the Earth and Sun balance the centripetal force of a ...
small object orbiting with them.
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The telescope's optics and instruments need to be kept ...
very cold to be able to observe the very faint infrared ...
signals of very distant objects clearly.
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This location is perfect for Webb's sunshield to ...
block out light and heat from the Sun, Earth and Moon.
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Unlike the Hubble Space Telescope, Webb's orbit ...
keeps the spacecraft out of Earth's shadow ...
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making L2 a thermally stable location for the observatory ...
to operate at.
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Webb will operate within its field of regard.
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The "field of regard" refers to the angles the telescope ...
can move while staying in the shadow of the Sun.
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Each of Webb's instruments has its own field of view. ...
The field of view is the area of sky an instrument can observe.
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While Webb is orbiting, it's fine steering mirror keeps ...
images stable while it is pointing at a target.
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The commissioning process will be complete approximately ...
six months after launch, at which time Webb will ...
start its science mission ...
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Helping to uncover more of the mysteries of out Universe.
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