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first use of a new instrument to take an astronomical image after it has been constructed
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In astronomy, first light is the first use of a new instrument, typically a telescope, to take an astronomical image after it has been constructed. This is often not the first viewing using the telescope, as optical tests are usually performed beforehand to adjust the components.
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In astronomy, first light is the first use of a new instrument, typically a telescope, to take an astronomical image after it has been constructed. This is often not the first viewing using the telescope, as optical tests are usually performed beforehand to adjust the components.
