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Tuesday, September 18, 2007
VATT take 2
This is a fisheye view of the VATT telescope with a bit more light than in my previous picture of it. The telescope is on an alt-azimuth mount which means one axis of the mount rotates around the vertical (the azimuth axis) while the other perpendicular axis rotates around the horizontal (the altitude axis). The mount is the yellow part of the telescope. The telescope itself is white and exceptionally short due to its f/1 Gregorian design which gives an effective f/9 at the camera despite the 1.8-meter mirror. The CCD camera can be seen at the bottom of the white part of the telescope inside the yellow fork of the mount. The image was taken with an 8mm fisheye lens with an exposure of 1/8 seconds at f/8, ISO 1600.
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