Direct detection of extra-solar planets by imaging: definition of the background

Christ Ftaclas; Andreas L. Nonnenmacher; Anthony Grusczak; Richard J. Terrile; Steven H. Pravdo

doi:10.1117/12.176817

1 June 1994 Direct detection of extra-solar planets by imaging: definition of the background

Christ Ftaclas, Andreas L. Nonnenmacher, Anthony Grusczak, Richard J. Terrile, Steven H. Pravdo

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176817
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

In order to explore the nature of the limits on direct extrasolar planet detection we have generated high accuracy broadband background models for several different cases. The simplest assumes an ideal diffraction limited background with shot and read noise errors. More complex models based on phase error maps drawn from real metrology data include the effects of scatter in the optical system. To these backgrounds a planet image can be added at various relative intensity levels. In the simples case, the background dominated by ideal diffraction is so smooth that a median filter is very effective at removing it locally, permitting planet detection at the limits of the flat field error of the detector. The use of more complex filters for the scatter limited case will be discussed.

Citation Download Citation

Christ Ftaclas, Andreas L. Nonnenmacher, Anthony Grusczak, Richard J. Terrile, and Steven H. Pravdo "Direct detection of extra-solar planets by imaging: definition of the background", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176817

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