Photometric precision needed for planetary detection

Details Photometric precision needed for planetary detection Photometric precision needed for planetary detection

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2350...15b&link_type=abstract

NASA Conf. Publ., NASA CP-2350, p. 15 - 27

Other

Detection, Photometry, Planets, Precision, Stars, Color, Photons, Prototypes, Scintillation, Space Platforms, Spaceborne Telescopes, Stellar Luminosity, Variations

Scientific paper

The photometric detection of Earth-sized planets in other solar systems requires a measurement precision of between 1 part in 100,000 and 2 parts in 1,000,000 depending on whether the stellar flux reduction or change in the color that is monitored. Because of atmospheric limitations caused by scintillation and differential extinction, a ground-based system would require a 9-m aperture telescope, whereas a 1-m aperture would be sufficient for a spaceborne system. A three-channel prototype photometer is being developed to test concepts and components that are needed to achieve the required precision.

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