Photodetectors on Coronagraph Mask for Pointing Control
TBMG-2015
07/01/2007
- Content
It has been proposed to install a symmetrical array of photodetectors about the center of the mask of a coronagraph of the type used to search for planets orbiting remote stars. The purpose of this installation is to utilize the light from a star under observation as a guide in pointing the telescope. Simple arithmetic processing of the outputs of the photodetectors would provide indications of the lateral position of the center of the mask relative to the center of the image of the star. These indications could serve as pointing-control feedback signals for adjusting the telescope aim to center the image of the star on the mask.
- Citation
- "Photodetectors on Coronagraph Mask for Pointing Control," Mobility Engineering, July 1, 2007.