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Thursday, 19 June 2014 17:42

L6-38: COMA

l6-38a

l6-38b

Additional Info

  • ID Code: L6-38
  • Purpose: Illustrate coma.
  • Description: The filament of a bright point source (about 3x6 mm) is focused onto a distant screen using a 20 cm focal length convex spherical lens, producing the image at the right in the center photograph above for paraxial rays. A plane front-surface mirror is used to direct a bundle of non-paraxial rays through the lens, producing the image at the left in the center photograph, which displays coma. The large baffle before the large 20cm lens and the iris following the lens limit stray light so that the two images are clearly differentiated.
  • Availability: Available
Read 622 times Last modified on Monday, 18 August 2014 14:43
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