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Proceedings Paper

Johns Hopkins adaptive optics coronagraph
Author(s): Mark Clampin; Samuel T. Durrance; David A. Golimowski; Robert H. Barkhouser
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Paper Abstract

The Johns Hopkins University is developing a stellar coronagraph which will use adaptive optics to achieve nearly diffraction-limited imaging at optical wavelengths with 1-2 meter class telescopes. The first phase of development, the incorporation of an image motion compensation system into the coronagraph, is complete. Performance tests have resulted in a factor of 2 gain in image resolution, corresponding to the maximum gain predicted by theory. The next phase of development involves the construction of an electrostatically deformable membrane mirror and a wavefront curvature sensor for the removal of higher order aberrations. A membrane mirror with 91 actuators has been built for laboratory testing. Integration of the adaptive mirrors, high speed wavefront sensor, and control processor is forthcoming.

Paper Details

Date Published: 1 December 1991
PDF: 10 pages
Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); doi: 10.1117/12.48804
Show Author Affiliations
Mark Clampin, Johns Hopkins Univ. (United States)
Samuel T. Durrance, Johns Hopkins Univ. (United States)
David A. Golimowski, Johns Hopkins Univ. (United States)
Robert H. Barkhouser, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 1542:
Active and Adaptive Optical Systems
Mark A. Ealey, Editor(s)

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