Evolution of The UBV Photoelectric Photometry Catalogue
The early edition of 1968 by Blanco, sometimes referred as simply the "Photoelectric Catalogue" or UBV was replaced by the Mermilliod edition UBV M in 1987 and extended in 1993. As the atmospheric extinction problem associated with the UBV photometric system became evidient, the UBV Photoelectric Photometry Catalogue was phased-out in 2000.
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