astrocompass


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astrocompass

(ˌæstrəʊˈkʌmpəs)
n
1. (Navigation) a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
2. (Tools) a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
References in periodicals archive ?
It consisted of [10]: autopilot A[PI]-5-2 or A[PI]-6; variometer BAP-30-3; altimeter B[??]-20; speed indicator KyC-1200; radio altimeter PB-2; astrocompass AK-49; short-range radio navigation system PC[??]H-2; airborne radar P[phrase omitted]-4[GAMMA]; radio compass APK-5; gyrohalfcompas [GAMMA][PI]K-52; remote gyromagnetic compass [phrase omitted]MK-7; course-glide path system C[PI]-50 <<Mainland>>, course-glide path system [??][??]C (course radio receiver KP[PI]-[R], glissad radio receiver [GAMMA]P[PI]-2, marker radio receiver MP[PI]-48 or MP[PI]-56[PI]); communication radio station (receiver yC-9, transmitter 1-PC[??]-70).
Longitude displayed on a GPS can be used to adjust a grid course, as can a direct course to a true aligned navaid, or a shot with an astrocompass if you're feeling sporty.