CCD imaging technique for moving objects in the field of view

Details CCD imaging technique for moving objects in the field of view CCD imaging technique for moving objects in the field of view

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7742e..63l&link_type=abstract

High Energy, Optical, and Infrared Detectors for Astronomy IV. Edited by Holland, Andrew D.; Dorn, David A. Proceedings of th

Astronomy and Astrophysics

Astronomy

Scientific paper

In the optical position observations to the near earth objects, the differential measurement methods are commonly used to improve positional accuracy, in which the object positions are calibrated by the star positions. However, due to the characteristics of motion of the observed object and the restrictions on current CCD imaging technology, single measurement accuracy of these methods for the object is not high. This is because there is relative motion between the calibration stars and the observed object in the field of view of the telescope. This paper analyzes characteristics of relative movement of the space objects on the Geosynchronous Earth Orbit and the stars in the field of view of an equatorial telescope, and CCD imaging effects for these objects and stars, then present a new CCD imaging technique for moving objects and stationary objects. One half of the CCD photosensitive area is used to acquire images of the moving objects in the field of view in drift scan mode, the other half to take simultaneously images of the stationary objects in the field of view in stare mode. Discussions about possibilities for developing this camera and its applications are presented. A prototype camera controller has been developed in our laboratory. The paper also describes the structure of the camera controller, the implementation method and skills, and some experimental results.

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