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The Planck primary mirror and baffle
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The Planck primary mirror and baffle

May 26, 2009
The Planck telescope and instruments are surrounded by a large baffle visible in this image which is used to radiate heat generated by the scientific instruments out into space. The baffle also provides the instruments with a stable and cold background environment. This photo was taken in a clean room at the launch site in Kourou, French Guiana, at the end of February 2009.