A more or less daily photoblog with favorites of my photographs. Subjects are typically nature, landscape, astrophotos, existing light.
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Thursday, November 05, 2009
Spacewatch 36 inch telescope
While on the subject of telescopes, here is a fisheye image of the Spacewatch 36 inch telescope on Kitt Peak. This telescope was built in 1921 and housed in a dome on the UofA campus in Tucson until the early 1960s when it was moved up to Kitt Peak. Spacewatch took over the telescope in the early 1980s and has kept it busy finding asteroids ever since. Today, it uses a mosaic camera which covers 2.9 square degrees per image and reaches fainter than about magnitude V=21 regularly. This image was taken with my 10mm fisheye lens with an exposure of 1/30 seconds at f/2.8, ISO 400.