Johns Hopkins adaptive optics coronagraph

Mark Clampin; Samuel T. Durrance; David A. Golimowski; Robert H. Barkhouser

doi:10.1117/12.48804

1 December 1991 Johns Hopkins adaptive optics coronagraph

Mark Clampin, Samuel T. Durrance, David A. Golimowski, Robert H. Barkhouser

Proceedings Volume 1542, Active and Adaptive Optical Systems; (1991) https://doi.org/10.1117/12.48804
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

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Mark Clampin, Samuel T. Durrance, David A. Golimowski, and Robert H. Barkhouser "Johns Hopkins adaptive optics coronagraph", Proc. SPIE 1542, Active and Adaptive Optical Systems, (1 December 1991); https://doi.org/10.1117/12.48804

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