Orbit of the Moon
The moon orbits the earth travelling at 2,288 mph, it advances 13˚ each day to come full circle in 28 days. During full moon I set up an equatorial mount to track the moon across the night sky. The equipment was then left set up in exactly the same position for two weeks until the moon was in its second quarter. I used the same tracking settings to then take exposures of the stars. The results reveal the speed of the moon's orbit.