Abstract
The goal of directly detecting the presence of planets around the nearby stars is one of great scientific interest and extreme difficulty. At visible wavelengths a Jupiter-sized planet around a nearby star 5 parsecs away is about one billion times fainter than the parent star and only 1 arcsec away. To extract such a small signal out of the background of scattered and diffracted light from the central star requires extraordinarily smooth optics at mid-spatial frequencies with instrumentation designed to reduce diffracted light.
© 1988 Optical Society of America
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