bn:03385089n
Noun Concept
Categories: Photometric systems, Stellar astronomy, American inventions
EN
UBV photometric system  UBV filter  UBV Filters  I band  Johnson-Cousins photometric system
EN
The UBV photometric system, also called the Johnson system, is a photometric system usually employed for classifying stars according to their colors. Wikipedia
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EN
The UBV photometric system, also called the Johnson system, is a photometric system usually employed for classifying stars according to their colors. Wikipedia
Wide-band photometric system used in astronomy Wikidata