Video Astronomy on the Go by Joseph Ashley

Author:Joseph Ashley
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Occultations

A third lunar activity very suited for video astronomy is timing occultations of stars by the Moon. An occultation is when some object passes between a star and an observer that blocks the view of the star. Two types of lunar occultations exist:1.A total occultation is when the observer sees only one event, either a star disappearing behind the Moon as it passes in front of the star or the star reappearing as the Moon moves away from the star.

2.A grazing occultation is when the Moon just grazes a star and the star blinks in and out of view as it passes behind lunar mountain peaks.

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