How do astronomers use photodectors

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a.a
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Homework Statement



How do astronomers use photodectors on nasa's hubble space telescope to produce galactic images?

Homework Equations





The Attempt at a Solution



I cant find any relevant resourses on the topic.. not on the internet either.
 

Answers and Replies

  • #2
Kurdt
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I think the HST just uses CCD's. You can check out how they work.
 
  • #3
mgb_phys
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The current instruments are here http://www.stsci.edu/hst/HST_overview/instruments
Most are CCDs, NICMOS uses a CMOS chip like the one in your digital camera and one of the earlier now repalced instruments FOC used an intensified TV tube.
 

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