AAS 202nd Meeting, May 2003
Session 34 When Do Planets Form?
Topical Associated Poster, Tuesday, May 27, 2003, 10:00am-6:30pm, West Exhbit Hall

[Previous] | [Session 34] | [Next]

[34.04] Coronagraphic amplitude and phase correction for detecting planets.

B. E. Woodgate, C. W. Bowers (NASA GSFC)

Detection of earth-like planets around other stars using coronagraphy requires the optical beam into the coronagraph to be extremely uniform in both phase and amplitude. Errors in phase can be corrected using a deformable mirror, and errors in amplitude can be corrected using a spatial light modulator, both in the pupil plane. These corrections can be combined using a Michelson interferometer. If amplitude corrections of only a few percent range are needed, the required accuracy of 10-4 can be obtained with spatial light modulators with the modest dynamic range of 8 bits.

[Previous] | [Session 34] | [Next]

Bulletin of the American Astronomical Society, 35 #3
© 2003. The American Astronomical Soceity.