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First light (astronomy)
![First light image from the Kepler space telescope[1]](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Kepler_mission_first_light.tiff/lossy-page1-400px-Kepler_mission_first_light.tiff.jpg)
In astronomy, first light is the first use of a telescope (or, in general, a new instrument) to take an astronomical image after it has been constructed. This is often not the first viewing using the telescope; optical tests will probably have been performed to adjust the components.
- ^ Atkinson, Nancy (16 April 2009). "Kepler's "First Light" Images". Universe Today. Retrieved 2012-10-13.
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