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Definition

Look up the formal definition (Kron 1980).

 

 

 

Measured for all objects:

  • Kron Radius determined from smoothed image
  • start with isophotal aperture at sky level
  • measure moments
  • redefine aperture to be 6x 1st radial moment
  • re-measure moments
  • do we iterate like this again - not sure?
  • Kron flux is measured inside 2.5 * 1st radial moment
  • 1.0 * 1st radial moment and 4.0 * 1st radial moment fluxes are also measured as KRON_INNER and KRON_OUTER (don't make it into PSPS though, only in cmfs)

 

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