Astronomical Black and White Glass Slide Collection_Moon Phase how offshore navigators depended on

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

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

He had witnessed and sketched the battle from the Dutch side

his genius saw him elected FRS (Fellow of the Royal Society) at 22

Astronomical Black and White Glass Slide Collection_Moon Phase how offshore navigators depended onAstronomical 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