Methods of detecting extrasolar planets. I - Imaging

Details Methods of detecting extrasolar planets. I - Imaging Methods of detecting extrasolar planets. I - Imaging

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977icar...30..422k&link_type=abstract

Icarus, vol. 30, Feb. 1977, p. 422-433.

Astronomy and Astrophysics

Astronomy

12

Astronomical Photography, Coherent Light, Extrasolar Planets, Light Scattering, Planetary Radiation, Coronagraphs, Signal Detection, Stellar Radiation, Telescopes

Scientific paper

It is proposed that the presence or absence of Jupiter-like planets, and perhaps even Venus-like planets, around nearby stars be studied with a 2-m telescope in earth orbit. According to the Abbe theory of imaging, the coherence of the light from an unresolvable star can be used to discriminate between planet light and scattered light from the star. Most scattered light is shown to arise from the imperfect figure of the telescope surface, but an analog of a phase contrast microscope can be used to control the figure automatically. A number of arrangements are possible for using the interference properties of light to cancel the residual scattered starlight by two to three orders of magnitude without affecting the planet light.

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