Meaning of isophotal and photometric

  • Thread starter _Andreas
  • Start date
  • #1
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Main Question or Discussion Point

What do the words "isophotal" and "photometric" mean? I can't find any definitions.
 

Answers and Replies

  • #2
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in astronomy "photometric" basically means the sky is clear and its a perfect observing night
 
  • #3
Claude Bile
Science Advisor
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Photometric is also a name given to a unit system that incorporates the response of the human eye. Units such as Candelas, Lumens (sp?) etc. fall into this category.

Claude.
 
  • #4
144
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Seems to fit with the context. Thanks! Now I only need to know what isophotal means. Photons with the same wavelength?
 

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