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planetarium ![click to hear : planetarium click to hear : planetarium](../../images/speaker-vert.gif)
Structure where a projector is used to simulate the movement of the celestial bodies on a dome representing half of the celestial sphere.
zenith ![click to hear : zenith click to hear : zenith](../../images/speaker-vert.gif)
Central point of the projection dome; simulates the center of the true celestial dome for an observer on the ground.
auxiliary projector ![click to hear : auxiliary projector click to hear : auxiliary projector](../../images/speaker-vert.gif)
Apparatus used to produce special effects.
working area ![click to hear : working area click to hear : working area](../../images/speaker-vert.gif)
projection dome ![click to hear : projection dome click to hear : projection dome](../../images/speaker-vert.gif)
Screen representing half of the celestial dome; the aspect of the sky at different periods is projected onto the screen.
midrange ![click to hear : midrange click to hear : midrange](../../images/speaker-vert.gif)
Loudspeaker designed to reproduce the middle frequencies of the sound signal.
auditorium ![click to hear : auditorium click to hear : auditorium](../../images/speaker-vert.gif)
The planetarium’s main room, built to receive the public during a show.
control room ![click to hear : control room click to hear : control room](../../images/speaker-vert.gif)
Premises containing the various control and monitoring instruments required to produce a show.
control console ![click to hear : control console click to hear : control console](../../images/speaker-vert.gif)
Instrument that serves to manually execute various commands for purposes of producing a show.
planetarium projector ![click to hear : planetarium projector click to hear : planetarium projector](../../images/speaker-vert.gif)
Projector that reproduces and simulates the past, present and future movement of celestial bodies.
woofer ![click to hear : woofer click to hear : woofer](../../images/speaker-vert.gif)
Loudspeaker designed to reproduce the low frequencies of the sound signal.