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A Lunar Eclipse occurs when the Moon passes through the Earth’s shadow. This can only occur on the night of a full Moon and when the Sun, Earth and Moon are very closely aligned. A Total Lunar Eclipse occurs when the Moon falls entirely within the Earth's Umbra – the innermost and darkest part of its shadow.

The Earth’s atmosphere refracts the Sun's white light in such a way that the shorter wavelengths of light, the Greens through to the Purples, are scattered away more strongly than the longer wavelengths at the redder end of the spectrum. The Moon passes through this faint remaining red light, giving it a stunning reddish colour cast.

This sequence was taken over approximately 5 hours. From right to left it starts just after sunset when the Moon was still yellow and distorted through the denser part of the Earth’s atmosphere, through the first hint of red light on the Moon in Earth's Penumbra, its partial shadow. It continues through Total Eclipse, the Moon exiting through the Earth's Penumbra again and continues until the Moon was high overhead and the eclipse had finished. The images were then carefully aligned, and this composition was created showing how the illumination of the Moon changes as it travels through the different, increasingly dark, parts of the Earth’s shadow.