The Vilnius photometric system is a medium-band seven-colour photometric system (UPXYZVS), created in 1963 by Vytautas Straižys and his coworkers. This system was highly optimized for classification of stars from ground based observations. The system was chosen to be medium-band, to ensure the possibility to measure faint stars.
Read more about Vilnius Photometric System: Selection of Bandpasses, Normalization, Mean Wavelength and Half-widths of Response Functions
Famous quotes containing the word system:
“While the system of holding people in hostage is as old as the oldest war, a fresher note is introduced when a tyrannic state is at war with its own subjects and may hold any citizen in hostage with no law to restrain it.”
—Vladimir Nabokov (1899–1977)