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ASP2011 Measurement Techniques Lectures 5-6

ASP2011 Measurement Techniques Lectures 5-6. Dr. Duncan Galloway University of Melbourne D.Galloway@physics.unimelb.edu.au http://www.ph.unimelb.edu.au/~duncang. The AAT; aperture ~3.9m, focal length of 12.7m, giving f /3.3 at prime focus http://www.aao.gov.au.

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ASP2011 Measurement Techniques Lectures 5-6

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  1. ASP2011 Measurement TechniquesLectures 5-6 Dr. Duncan Galloway University of Melbourne D.Galloway@physics.unimelb.edu.au http://www.ph.unimelb.edu.au/~duncang

  2. The AAT; aperture ~3.9m, focal length of 12.7m, giving f/3.3 at prime focus http://www.aao.gov.au The Giant Magellan Telescope (2016?); full aperture 25.3m, primary mirror focal length 18m, giving f/0.7 for the mirror assembly http://www.gmto.org

  3. Top - Corner detail from a photograph taken with a good quality lens. Bottom - Detail from a similar photograph taken with a wide angle lens showing visible chromatic aberration (especially at the dark edges on the right).

  4. A point source as imaged by a system with (top) negative, (center) zero, and (bottom) positive spherical aberration. Images to the left are defocused toward the inside, images on the right toward the outside..

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