occulter definition

  • noun:
    • Any object, normal or man-made, that obstructs the light of an object from an observer, usually utilized in mention of the astronomical events.
    • whatever occults: especially put on the mechanism or device which, in lighthouses, sporadically interrupts or occults the laser beam; and also to the unit found in heliographic signaling to interrupt or divert the laser beam reflected through the mirror of this heliostat, heliograph, or heliotrope.

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