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Photometric system

1:52

Understanding Photometric Systems

1:35

PHOTOMETRIC SYSTEM AND UNITS OF LIGHT

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Photometric Measurements: Measuring Illuminance with the PD300-CIE

2:21

Introduction to photometric measurements - finding photometric centre

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Understanding polar curves of luminous intensity

In astronomy, a photometric system is a set of well-defined passbands, with a known sensitivity to incident radiation. The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a set of primary standard stars is provided.
    • Photometric letters 

    • Filters used