Meaning of isophotal and photometric

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Discussion Overview

The discussion revolves around the meanings of the terms "isophotal" and "photometric," particularly in the context of astronomy and photometry. Participants seek definitions and clarifications regarding these terms.

Discussion Character

  • Conceptual clarification

Main Points Raised

  • One participant inquires about the definitions of "isophotal" and "photometric."
  • Another participant suggests that "photometric" refers to conditions of clear skies and ideal observing nights in astronomy.
  • A different participant notes that "photometric" also pertains to a unit system that accounts for human eye response, mentioning units like Candelas and Lumens.
  • A later reply seeks clarification on "isophotal," speculating it may relate to photons with the same wavelength.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the definition of "isophotal," while there are varying interpretations of "photometric." The discussion remains unresolved regarding the precise meanings of both terms.

Contextual Notes

Definitions provided are based on participant contributions and may depend on specific contexts within astronomy and photometry.

_Andreas
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What do the words "isophotal" and "photometric" mean? I can't find any definitions.
 
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in astronomy "photometric" basically means the sky is clear and its a perfect observing night
 
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.
 
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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