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Proceedings Paper

The Stellar Imager (SI) mission concept
Author(s): Kenneth G. Carpenter; Carolus J. Schrijver; Richard G. Lyon; Lee G. Mundy; Ronald J. Allen; J. Thomas Armstrong; William C. Danchi; Margarita Karovska; Joseph Marzouk; Lisa M. Mazzuca; David Mozurkewich; Susan G. Neff; Thomas A. Pauls; Jayadev K. Rajagopal; Gregory Solyar; Xiaolei Zhang
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Paper Abstract

The Stellar Imager (SI) is envisioned as a space-based, UV-optical interferometer composed of 10 or more one-meter class elements distributed with a maximum baseline of 0.5 km. It is designed to image stars and binaries with sufficient resolution to enable long-term studies of stellar magnetic activity patterns, for comparison with those on the sun. It will also support asteroseismology (acoustic imaging) to probe stellar internal structure, differential rotation, and large-scale circulations. SI will enable us to understand the various effects of the magnetic fields of stars, the dynamos that generate these fields, and the internal structure and dynamics of the stars. The ultimate goal of the mission is to achieve the best-possible forecasting of solar activity as a driver of climate and space weather on time scales ranging from months up to decades, and an understanding of the impact of stellar magnetic activity on life in the Universe. In this paper we describe the scientific goals of the mission, the performance requirements needed to address these goals, the "enabling technology" development efforts being pursued, and the design concepts now under study for the full mission and a possible pathfinder mission.

Paper Details

Date Published: 24 February 2003
PDF: 10 pages
Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); doi: 10.1117/12.459776
Show Author Affiliations
Kenneth G. Carpenter, NASA Goddard Space Flight Ctr. (United States)
Carolus J. Schrijver, Lockheed Martin Advanced Technology Ctr. (United States)
Richard G. Lyon, NASA Goddard Space Flight Ctr. (United States)
Lee G. Mundy, Univ. of Maryland/College Park (United States)
Ronald J. Allen, Space Telescope Science Institute (United States)
J. Thomas Armstrong, Naval Research Lab. (United States)
William C. Danchi, NASA Goddard Space Flight Ctr. (United States)
Margarita Karovska, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Joseph Marzouk, Sigma Research and Engineering Corp. (United States)
Lisa M. Mazzuca, NASA Goddard Space Flight Ctr. (United States)
David Mozurkewich, Naval Research Lab. (United States)
Susan G. Neff, NASA Goddard Space Flight Ctr. (United States)
Thomas A. Pauls, Naval Research Lab. (United States)
Jayadev K. Rajagopal, Space Telescope Science Institute (United States)
Gregory Solyar, NASA Goddard Space Flight Ctr. (United States)
Xiaolei Zhang, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 4854:
Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation
J. Chris Blades; Oswald H. W. Siegmund, Editor(s)

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