title: Interferometric measurement of a concave, φ-polynomial, Zernike mirror.
abstract: We report on the surface figure measurement of a freeform, φ-polynomial (Zernike) mirror for use in an off-axis, reflective imaging system. The measurement utilizes an interferometric null configuration that is a combination of subsystems each addressing a specific aberration type, namely, spherical aberration, astigmatism, and coma.
authors.forename: Kyle
authors.initials: K
authors.lastname: Fuerschbach
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Thompson
authors.forename: Jannick P
authors.initials: JP
authors.lastname: Rolland