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Optimal Photometry

Optimal Photometry for CMDs - Aims and Achievements

The Aim

  • Obviously the most accurate and precise photometry and astrometry possible, with realistic errors. This is why we use optimal photometry.
  • We do not throw away any object, but use data flagging.
  • But do flag any even slightly dubious object.
  • Rigorous procedures for assessing completeness.
  • Rigorous checking of final results to show our errors and completeness are actually correct.
  • Software which is quick and easy to use.
  • Sensible archiving of code so questions about old reductions of data can be addressed.

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