Patent ID: 8208203
Filing Date: 2012-06-26
Classification: G02B

Abstract:
1. An optical imaging system comprising: a platform configured for an outer-space orbit; a telescope bolted to the platform for collecting light from a scene-of-interest viewed through an aperture, and focusing the collected light onto a focal plane array; a coelostat positioned in front of the aperture configured to provide a field-of-regard (FOR) that is larger than a field-of-view of the telescope; wherein the telescope is bolted to the platform and is not-gimbaled; the coelostat includes a first mirror for viewing the scene-of-interest and a second mirror for receiving light from the first mirror and transmitting the light to the aperture for collection by the telescope; the telescope includes an optical axis oriented in an azimuth axis for collecting the light through the aperture; the second mirror is oriented in front of the aperture and configured to rotate in the azimuth axis; and the first mirror is configured to rotate in an elevation axis.