star tracker
From Spacefaring
A star tracker is an optical device that measures the positions of stars using photocells or a camera. As the positions of many stars have been measured by astronomers to a high degree of accuracy, a star tracker on a satellite or spacecraft may be used to determine the orientation of the spacecraft with respect to the stars. In order to do this, the star tracker must obtain an image of the stars, measure their apparent position in the reference frame of the spacecraft, and identify the stars so their position can be compared with their known absolute position from a star catalog. A star tracker may include a processor to identify stars by comparing the pattern of observed stars with the known pattern of stars in the sky.
ICESat O1-01-Star Tracker
Tete d'optique de viseur d'etoile Musee du Bourget P1010602
Hydra Sodern
Double arm, Type 4 barn-door drive for astrophotography
Portrait of Sodern's CEO Vincent Dedieu- Hardware Design and Star Selection Algorithm for Arcsecond Pico Star Tracker - 2018 doctoral thesis by Vishnu Anand Muruganandan at Seoul University (Q1860)
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| commons | image | ICESat O1-01-Star Tracker | Commons | ||
| commons | image | Tete d'optique de viseur d'etoile Musee du Bourget P1010602 | Commons | ||
| commons | image | Hydra Sodern | Commons | ||
| commons | image | Double arm, Type 4 barn-door drive for astrophotography | Commons | ||
| commons | image | Portrait of Sodern's CEO Vincent Dedieu | Commons | ||
