초록 ▼

A telescope with a spherical primary mirror and a movable secondary optical element which is positioned at various locations near the focal plane of the primary mirror and directs a portion of the focused radiation to a coude optics device at the center of curvature of the primary mirror. The coude

A telescope with a spherical primary mirror and a movable secondary optical element which is positioned at various locations near the focal plane of the primary mirror and directs a portion of the focused radiation to a coude optics device at the center of curvature of the primary mirror. The coude optics device reflects the focused radiation to a detector. In a preferred embodiment of this invention a field of several degrees can be scanned very rapidly while viewing much smaller object fields.

대표청구항 ▼

A telescope system for detecting electromagnetic radiation within a viewing range comprising: a spherical concave primary mirror defining a focal surface and center of curvature, a secondary optical means for directing beams of radiation reflected off said primary mirror to the vicinity of said cent

A telescope system for detecting electromagnetic radiation within a viewing range comprising: a spherical concave primary mirror defining a focal surface and center of curvature, a secondary optical means for directing beams of radiation reflected off said primary mirror to the vicinity of said center of curvature, a positioning means for positioning said secondary optical means tangentially about said center of curvature at a plurality of positions, each of said plurality of positions being near said focal surface and the same distance from said focal surface, a detector means for detecting all or a portion of said beams of radiation, said primary mirror, said secondary optical means, said positioning means and said detector means, being arrange so that said positioning means positions said secondary optical means so as to permit said telescope system to scan said viewing range and to permit said detector means to detect all or portions of said beams of radiation within said viewing range without movement of said primary mirror or said telescope systems as a whole.