PASS - a Permanent All Sky Survey for the detection of transits

Deeg, H. J.
Bibliographical reference

In: Proceedings of the First Eddington Workshop on Stellar Structure and Habitable Planet Finding, 11 - 15 June 2001, Córdoba, Spain. Editor: B. Battrick, Scientific editors: F. Favata, I. W. Roxburgh & D. Galadi. ESA SP-485, Noordwijk: ESA Publications Division, ISBN 92-9092-781-X, 2002, p. 273 - 276

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A project to survey the entire visible sky for the presence of transits by extrasolar planets is presented. The experiment would consist of one or two fixed arrays of wide-angle cameras, that would take images of the entire sky more then 30 deg above horizon. A preliminary design consists of 15 cameras in each array, with optics based on SLR camera lenses, with f = 50 mm and aperture f/1.4. With images being taken every few minutes, the brigtness limit for transit detections will be about 10th magnitude. One such instrument located around 30 deg N should allow the surveying of about 150000 stars, with a southern declination limit of -18 deg. With the addition of a similar instrument in the opposite hemisphere, a coverage of the entire sky can be obtained (250000 stars), and coverage is relatively uniform over all celestial latitudes. The result would be a complete catalog of about 120 transiting giant planets around bright stars. The sample star's brightness would also make transits detected with this system the best suited ones for follow-up studies from ground and space mission.