1. a device or object that blocks light from a celestial body to allow observation of fainter nearby objects
Usage: astronomy

Examples

• The space telescope used an occulter to block the bright star’s light.
• Scientists deployed the occulter to study the dim exoplanet orbiting the star.
• The external occulter allowed astronomers to observe the star’s corona.
• Engineers designed a new occulter for the solar observation mission.
• The occulter successfully masked the sun’s disk during the eclipse study.
• Researchers positioned the occulter precisely to eliminate stellar glare.