28 August 1998 Searching for exozodiacal discs with a rotation shearing interferometer for NGST
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Proceedings Volume 3356, Space Telescopes and Instruments V; (1998); doi: 10.1117/12.324480
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States
The detection of exo-Zodiacal discs is an important step in the NASA program for the detection of exo-solar planets, in particular, the detection of earth-like planets. We show that by incorporating a nulling interferometer NGST would be very well suited to study exo-zodiacal disks in nearby stars. Over 400 stars could be surveyed and at least 40 could be resolved such that structural parameters on the 2-3 AU scale could be measured. This can be done within the existing optical NGST design but demands a wavefront RMS error less than (lambda) /100 at 10 micron in order to assure a wavefront cancellation of 1000. In addition, a new concept for an off-axis NGST design is discussed.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard Burg, Pierre Y. Bely, Larry Petro, Jean Gay, Yves Rabbia, Pierre Baudoz, David C. Redding, Charles M. Perrygo, "Searching for exozodiacal discs with a rotation shearing interferometer for NGST", Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); doi: 10.1117/12.324480; https://doi.org/10.1117/12.324480






Beam splitters

Shearing interferometers

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