Wednesday, 24 February 2016

Early morning update

The Moon, as many of you will know, orbits the Earth in an anticlockwise direction, taking just over 28 days for each orbit. Travelling at just over a kilometre per second, every hour it moves across the background stars by roughly its own diameter (half a degree of arc) Jupiter is currently 415 million miles from Earth, so its apparent motion across the stars is a lot slower.

What this means, of course, is that the Moon's separation from Jupiter gradually reduced overnight, and I crawled out of bed at 5.00am this morning to catch more images of the two bodies in the dawn sky. I also managed a shot of Jupiter showing three of its large moons and a hint of a cloud belt!


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