Electronic camera with automatic image tracking and multi-frame

Details Electronic camera with automatic image tracking and multi-frame Electronic camera with automatic image tracking and multi-frame

1992-10-22

1994-11-15

Chin, Tommy P.

Television

Camera, system and detail

Solid-state image sensor

348294, 348295, 348143, 348169, H04N 5225, H04N 5253, H04N 701

Patent

active

053652690

ABSTRACT:
An optical image (54) of an astronomical scene is focussed by a telescope (16) onto a charge-coupled-device (CCD) photosensor array (50) to produce successive electronic pixel images (92) of the scene which are registered and co-added to produce an accumulated image (96) which is substantially free of streaking caused by rotation of the earth. A current image (92) is registered with an accumulated image (94) by sensing the coordinates of a selected bright star (90) in both images (92,94), computing the offset .DELTA.I between the coordinates, and shifting the current image (92) by the offset .DELTA.I prior to addition to the accumulated image. The telescope (16) may have a clock drive (24) to which the offset .DELTA.I is also applied to correct for mechanical tracking errors.

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Charge-Coupled device (CCD) trackers for high accuracy guidance applications, Phil M. Solomon.
Vidicon Star Tracker, Walter H. Schuck.

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