Walraven photometry of OB stars

Observations of OB-stars, made in 1959 and 1960 at the Leiden Southern Station near Hartebeespoortdam, South Africa, with the VBLUW photometer attached to th e 90 cm...1959年与1960年间，在南非哈特比斯普特达姆附近的莱顿南部观测站，使用搭载于90厘米设备的VBLUW测光仪（VBLUW photometer）开展的O、B型恒星（OB-stars）观测记录。