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Searching For Alien Planets (10 L.Y.)

9008-058

 

Graph shows directivity response of receiving telescope and the placement of an extrasolar planet in a null.

This graph shows how the contrast ratio between the light reflected by an extrasolar planet and its star can be enhanced by placing the image of the star in a response null. The range is 10 light years.

A space-based telescope is assumed or a ground-based telescope with adaptive optics. By using a focal plane array, the image of the star fall on one pixel (photodiode) and the image of the extrasolar planet on another pixel (photodiode).

 

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