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NVGs and Night Operations > HEMISPHERICAL ILLUMINATION > Flashcards

HEMISPHERICAL ILLUMINATION Flashcards

1
Q

What are the hemispherical light sources?

A

Natural: Lunar, Solar, and Starlight

Artificial: Cities, Automobiles, Fires, Flares, etc.

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2
Q

At what rate does the moon change its angle?

A

15 degrees/hour (1 degree every 4 minutes)

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3
Q

What are the phases of the moon?

A

New Moon

First Quarter

Full Moon

Third Quarter

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4
Q

What is EENT?

A

End Evening Nautical Twilight

Sun = 12 degrees below the horizon after sunset

Roughly 48 minutes after sunset

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5
Q

What is BMNT?

A

Before Morning Nautical Twilight

Sun = 12 degrees below the horizon before sunrise

Roughly 48 minutes before sunrise.

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NVGs and Night Operations (9 decks)

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