Stolen shamelessly from NASA's picture of the day website.
http://www.nasa.gov/multimedia/imagegallery/iotd.html
"Transiting the Sun
In this tightly cropped image, the NASA space shuttle Atlantis is seen in
silhouette during solar transit, Tuesday, May 12, 2009, from Florida. This
image was made before Atlantis and the crew of STS-125 had grappled the
Hubble Space Telescope.
The photographer made this image using a solar-filtered Takahashi 5-inch
refracting telescope and a Canon 5D Mark II digital camera.
Image Credit: NASA/Thierry Legault"
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Cheers
Dave Kearton