Astronomical instrument
instrument used in astronomy
astronomical rings
nocturnal
astrolabe
New Mexico Exoplanet Spectroscopic Survey Instrument
astronomical interferometer
sextant
siderostat
Janssen revolver
Galaxy H-Alpha Fabry-Perot System
Astronomical Multi Beam Recombiner
Precision Integrated-Optics Near-infrared Imaging ExpeRiment
meridian circle
sextant
telescope
octant
adaptive optics
astronomical clock
ESPRESSO
integral field spectrograph
kamal
sundial
coronagraph
Jacob's staff
blink comparator
repeating circle
laser guide star