Astro photography
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Colourful Mars

Colourful Mars, March 5, 2008. Mars is usually referred to as the red planet. But it is at best a terra cotta red, really more of an orange. While I was taking this photograph of Mars among the stars of Gemini the Twins a thin sheet of high altitude cloud moved in causing a diffuse glow around the planet and the brighter stars. Sometimes astro photographers use a mist filter on their cameras to simulate this effect because it emphasizes the colours in the night sky. Particularly hot stars look bluish, while slightly cooler ones look white. Mid-temperature stars like the Sun have a yellowish colour.

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Steve Irvine
R.R. # 2
Wiarton, Ontario
Canada N0H 2T0
(519) 534 2175
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