Monday, October 1, 2007

Natural N9


George Zhou

Year 12, Camberwell Grammar School


The Moon


The images shows the moon in its full vibrancy of colours – a coloured geological map of the lunar surface. The photo was taken with the colours exaggerated to enhance the difference in tone. Different rocks reflect light in distinct ways, the colour of the reflection is a good indication for the type of mineralogy on the surface of the moon. The two main types of landscape on the moon, maria and highlands, are obviously different geological makeup – the maria are often blue or red tinted, depending on the metal content of the surface; the highlands are bright white, cause by the ejecta material sprayed on the surface. The best example of highland features is the Tycho crater, whose ejecta rays are spread half way across the moon. The image was taken during full moon as that is when all the lunar surface facing Earth is lit, allowing a complete mapping of the geology. The image was taken with a Canon Powershot, through the eyepiece of an 8inch f8 reflector.

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