There are currently 2 astronomical definitions for the tag 'instrument'.
instrument, astronomical instrument, instrumentation
airplaneborneinstrument, amplifier, armillarysphere, astrolabe, astrometricinstrument, auxiliaryinstrument, blinkcomparator, bolometer, coronagraph, detector, guidesystem, imaginginstrument, interferometer, magnetograph, magnetoheliograph, quadrant, sextant, spectrograph, stroboscope, telescopeinstrument
calibration, electronicequipment, frequencystandard, metrology, peripheral, supportsystem