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In another section of the
exhibit hallway, these cases

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hold additional astronaut tools.
The middle case contains tools

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used to repair the Advanced
Camera for Surveys, a workhorse

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camera whose power supply failed
after almost five years of

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service. To fix the instrument,
astronauts had to first use this

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grid cutter to slice through a
metal grid that blocked a cover.

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That cover had to be removed to
get to circuit boards underneath

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it. The tool contains 12
individual cutter blades on the

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back that sheared through the
metal grid when the front bolts

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were turned. The astronauts then
used the Fastener Capture Plate,

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a tool that prevented 32 small
screws that were holding that

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cover on the instrument from
floating away when they were

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taken out. Next, astronauts used
a card extractor to remove four

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circuit boards that were under
that cover. One of those circuit

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boards is located in the next
display case to the right. The

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overall repair was successful
and the instrument has now been

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functioning longer than it did
before its initial failure. The

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built-in display case on the
wall has parts of the first

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spectrograph that flew on Hubble
– the Goddard High Resolution

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Spectrograph. It flew in space
for 7 years. It was designed to

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measure the intensity of light
at different wavelengths to

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reveal information about an
object’s properties. The

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spectrograph used gratings,
which act like prisms to break

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the light into a rainbow.
Special detectors then captured

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the spectral data from the
rainbow of light produced by the

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gratings. The other half of the
built-in display case contains

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more awards received by the
Hubble mission as well as

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various Hubble mementos,
including US flags and

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spacecraft insulation that flew
in space. On the far wall is a

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copy of one of the blueprints of
the Hubble Space Telescope that

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was made in 1981 when Hubble was
being built. We hope you have

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enjoyed this tour of the Hubble
Space Telescope Control Center.

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To find out more about Hubble or
its operations, explore our

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website at nasa.gov/hubble or
follow us on social media

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@NASAHubble. [music fades out]