Sensitivity of an Imaging Space Infrared Interferometer

Details Sensitivity of an Imaging Space Infrared Interferometer Sensitivity of an Imaging Space Infrared Interferometer

2000-11-16

arxiv.org/abs/astro-ph/0011309v1

Astronomy and Astrophysics

Astrophysics

28 pages, 9 figures. To be published in Applied Optics

Scientific paper

10.1364/AO.40.000514

We study the sensitivities of space infrared interferometers. We formulate the signal-to-noise ratios of infrared images obtained by aperture synthesis in the presence of source shot noise, background shot noise and detector read noise. We consider the case in which n beams are pairwise combined at n(n-1)/2 detectors, and the case in which all the n beams are combined at a single detector. We apply the results to future missions, Terrestrial Planet Finder and Darwin. We also discuss the potential of a far-infrared interferometer for a deep galaxy survey.

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