The Filled Arm Fizeau Telescope (FFT)

Statistics – Applications

Scientific paper

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Fizeau Effect, Imaging Techniques, Interferometers, Large Space Structures, Point Spread Functions, Astrometry, Laser Applications, Structural Vibration, Vibration Damping

Scientific paper

Attention is given to the design of a Mills Cross imaging interferometer in which the arms are fully filled with mirror segments of a Ritchey-Chretien primary and which has sensitivity to 27th magnitude per pixel and resolution a factor of 10 greater than Hubble. The optical design, structural configuration, thermal disturbances, and vibration, material, control, and metrology issues, as well as scientific capabilities are discussed, and technology needs are identified. The technologies under consideration are similar to those required for the development of the other imaging interferometers that have been proposed over the past decade. A comparison of the imaging capabilities of a 30-m diameter FFT, an 8-m telescope with a collecting area equal to that of the FFT, and the HST is presented.

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