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Coronagraph / Adaptive Optics Laboratory |
This laboratory is dedicated to high dynamic range imaging of the sort required to image
planets around other stars. It is centered on a breadboard coronagraphic instrument which
includes a simulated star and telescope. It will also contain an adaptive mirror which allows
correction of the wavefront. The goal is to correct optical phase errors at the level of a few
Ångstroms (one ten billionth of a meter). A correction of this order is required in order to
image extrasolar planets in space with a modest sized telescope.
Also under investigation in the
lab is the development of phase inversion algorithms which allow adjusting the adaptive mirror
to the required level without the need for a separate optical metrology channel. Data collection
will be by means of several digital cameras located throughout the breadboard including a large
format, cooled camera in the final focus designed for the low light levels we will encounter.
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