Distortion - Coma



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 Code Number :   6A65.31  

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

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Condition :   Good  
Principle :   Off Axis Lens Effects 
Area of Study :  Optics   
Equipment :   Optics Table, 30 cm focal length lens, 48 cm focal length lens, Slide Projector (Distant Light).

 
Procedure :   Coma - Set up is the same as that for Chromatic Aberration. Turn the lens so that it is no longer perpendicular to the angle of the light from the slide projector. A figure that looks like a bow tie will be produced with one lobe red ringed and one lobe blue ringed.  
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   References

John H. Moore, Christopher C. Davis, Michael A. Coplan,  "Coma,"  Building Scientific Apparatus 2nd Edition,  p. 146.

C. Harvey Palmer, "Experiment A13: The Off-Axis Aberrations of Lenses,"  Optics - Experiments and Demonstrations, John Hopkins Press, 1962.



Mail Questions and Comments to:  Dale Stille