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Title: Nulling Interferometers for Space-Based ...
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Book Type: Hardcover
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High-contrast astronomical imaging has progressed significantly in the past decade. Many of these techniques have been laboratory demonstrated to perform at contrast levels adequate for the detection of Solar System-like planets and dust around nearby stars. None of them, however, have been demonstrated in space. The state of the art in high-contrast imaging systems that have been built for space-based observation, the environment best suited for spectroscopic study of exo-Earths, is the nulling interferometer that was flown on the Planetary Imaging Concept Testbed Using a Rocket Experiment (PICTURE). The PICTURE nulling interferometer, built from multiple optical elements, relies on the incorporation of additional dispersive components in order to deliver the broadband performance preferred for faint object imaging. These elements add to the cost, complexity, and misalignment risk of the instrument.
The Monolithic Achromatic Nulling Interference Coronagraph (MANIC) Brian Hicks describe in this thesis the first optic of its kind. He has taken the multiple optical element concept described in earlier works from theory to a flyable monolithic optic. Brian has advanced the state of the art in nulling interferometers by improving optical stability and robustness. Following application of the fabrication method described in this work, the design of MANIC also allows for broader band performance at higher contrast than that achieved with the PICTURE nulling interferometer.
Dr. Brian Hicks is a scientist and engineer specializing in the development of instrumentation for space-based research in astronomy and space physics. A graduate of Macalester College (B.A. 2002, Physics and Astronomy) and Boston University (M.A. 2006, Astronomy; Ph.D. 2011 Electrical Engineering), Dr. Hick is currently a Post-Doctoral Research Fellow at the University of Massachusetts Center for Atmospheric Research. His active scientific interests include direct imaging and spectroscopy of exoplanetary systems, interstellar and intergalactic dust, as well as the study of gas and plasma dynamics around Earth and the various other bodies throughout the Solar System that could support life including Mars, Ganymede, Europa, and Titan.
In addition to participating in a number of design studies for satellites-, balloon- and rocket-borne imaging and spectroscopic instruments, Dr. Hicks has played major roles in the design and fabrication of high-contrast, high-resolution imagining and measurement instrumentation for the study of exoplanets and their morphological environments. A highlight amongst these instruments was the NASA-funded Planetary Imaging Concept Testbed Using a Sounding Rocket (PICTURE) project, which he helped to launch through the support of his graduate advisor, Dr. Supriya Chakrabati, in October 2011.
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