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How do astronomers use photodectors

  1. Jun 8, 2008 #1


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    1. The problem statement, all variables and given/known data

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

    2. Relevant equations

    3. The attempt at a solution

    I cant find any relevant resourses on the topic.. not on the internet either.
  2. jcsd
  3. Jun 8, 2008 #2


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    I think the HST just uses CCD's. You can check out how they work.
  4. Jun 8, 2008 #3


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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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