ROSAT NEP X-ray source catalog
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The sky around the North Ecliptic Pole (NEP), at 18:00:00+66:33:39, has the deepest exposure of the entire ROSAT All-Sky Survey (RASS, Cat. ). The NEP is an undistinguished...
北黄道极（North Ecliptic Pole，NEP）周边天区，坐标为赤经18时00分00秒、赤纬+66°33′39″，拥有ROSAT全天空巡天（ROSAT All-Sky Survey，RASS，星表（Cat.））中最深的曝光观测深度。北黄道极是一个并无特殊之处的……
