title: Imaging with obscured pupils.
abstract: It is shown that diffraction-limited imaging systems with symmetric pupils and a noncentral obscuration yield a higher concentration of energy near the center of an image of a point object than those with central obscuration.
authors.affiliation: The Charles Stark Draper Laboratory, Inc., Cambridge, Massachusetts 02139, USA.
authors.forename: V N
authors.initials: VN
authors.lastname: Mahajan