star tracker
Rare technical term for a device that determines spacecraft orientation by tracking stars; equivalent to スタートラッカー.
See also: スタートラッカー
A star tracker is used for attitude control of satellites.
Common loanword for the same device; 星姿勢計 is a rare native Japanese equivalent.
Compound of 星 (star), 姿勢 (attitude, posture), and 計 (meter, gauge). The exact derivation is uncertain; it is a technical coinage.