WEBVTT FILE

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The WISPR instrument is made of two
telescopes that are designed to sit

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between the two antennae from the FIELDS experiment and image the solar wind and

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the corona as we're flying into it so
whisper is the latest instrument we've

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built before but had really two
requirements we wanted to be able to see

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far from the spacecraft and then be able
to track

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the structures that are flowing out from
the Sun and then as they passed the

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spacecraft we would see them locally at
the space path the WISPR instrument is

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the only imaging instrument on the Parker
Solar Probe and if is looking in the

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direction that the spacecraft is
traveling and what it sees is light

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scattered by the dust that's in orbit
about the Sun but then once we remove

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that what we see is the light scattered
by the electrons in the corona in the

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solar wind these measurements that were
making from the WISPR instrument have

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been made before by other instruments
from 1au from the distance of the earth

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about 100 million miles from the Sun by
getting closer we're increasing then the

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ability to see what's really close to
the Sun the fact that you're close means

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that you you don't have all this this
material that's in between you and the

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and the object that you really
interested in and that contributes to -

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background noise and so you're looking
at something that's much more pristine

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you're looking at just that object all
by itself

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by going eventually 95% of the way to
the Sun we are going to be able to see

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what is a dust free region around the
Sun that's going to be exciting part so

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a probe cannot have any imager that
looks at the Sun directly so the WISPR

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instrument looks off of the heat shield
that protects us from this very intense

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heat and so we we sort of peek over the
edge of it we use it as a shield to

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block out the Sun itself and that allows
us to see this very faint glow coming

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from the corona
that's only observed during the clips

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for example we're creating an artificial
Eclipse. Eclipses are great but from

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the data point of view I like my
instruments better they're working

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continuously round the clock seven days
a week 24 hours a day 365 days a year

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sometimes for years.