Fifty meter-class external occulters have been proposed to detect earth-like planets. The THEIA concept1, a forty-meter
diameter occulter with twenty ten-meter petals has the necessary...
We present a new method for numerical propagations through
Lyot-style coronagraphs using finite size occulting masks. Standard methods
for coronagraphic simulations involve Fast Fourier...
Conventional adaptive optics methods use phase conjugation based on measurements of the phase
aberrations at the pupil plane. The measurements are typically done using a Shack-Hartmann...
The ultimate limitation of visible light high-dynamic-range imaging systems such as shaped pupil coronagraphs
comes from the scattering due to imperfections in the optical surfaces of the...
Conventional adaptive-optics systems correct the wavefront by adjusting a deformable mirror (DM) based on measurements of the phase aberration taken in a pupil plane. The ability of this...
