Bell Lab. H I Survey - High Velocity Clouds

The sky north of declination -40 deg. was observed in the 21 cm line of atomic hydrogen with the FWHM = 2 deg. beam of the 20 foot horn reflector at AT&T Bell Laboratories,...本数据集针对赤纬-40°以北的天区，使用位于AT&T贝尔实验室的20英尺喇叭反射器的半高全宽(Full Width at Half Maximum, FWHM)为2°的观测波束，在原子氢的21厘米谱线波段完成了观测。