Astronomical Black and White Glass Slide Collection_Moon Phase or simply love nautical heritage

or simply love nautical heritage

These strange spherical boulders on the Mendocino Coast in northern California are revealed only during low tide

it rises in the final hours of darkness before dawn

I set my intervalometer to 3 minute intervals and shot the moon at a speed of 1/160th or 1/100th second to freeze the motion of the Moon

how offshore navigators depended on it for their lives in wild and dangerous seas until the advent of GPS – and the sextant’s vital role in the history of exploration

Astronomical Black and White Glass Slide Collection_Moon Phase or simply love nautical heritageAstronomical black and white glass slide of diagram of Moon's position on star chart over London. The star chart shows the changing position of the Moon against the background stars on two consecutive nights over a London skyline from Westminster Bridge. Artist: Unknown Date: Unknown