A more or less daily photoblog with favorites of my photographs. Subjects are typically nature, landscape, astrophotos, existing light.
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Tuesday, March 20, 2007
Reflecting on a large telescope
My friends can be seen reflected in the huge secondary mirror at the top of the WIYN telescope. This mirror reflects light that has bounced off the 3.5-m primary mirror back down into the instrumentation area at the bottom of the telescope. My friends were standing on the opposite side of the telescope while I was taking pictures of the secondary and saw them all there. This image was taken at 55mm focal length with an exposure of 1/100 seconds at f/6.3, ISO 800.