Science. 1980 Jan 25;207(4429):431-4. doi: 10.1126/science.207.4429.431.
Several interesting cloud and atmospheric features of the Saturn system have been observed by the long-wavelength channel of the two-channel ultraviolet photometer aboard the Pioneer Saturn spacecraft. Reported are observations of the most obvious features, including a Titan-associated cloud, a ring cloud, and the variation of atmospheric emission across Saturn's disk. The long-wavelength data for Titan suggest that a cloud of atomic hydrogen extends at least 5 Saturn radii along its orbit and about 1.5 Saturn radii vertically. A ring cloud, thought to be atomic hydrogen, has also been observed by the long-wavelength channel of the photometer; it shows significant enhancement in the vicinity of the B ring. Finally, spatially resolved observations of Saturn's disk show significant latitudinal variation. Possible explanations of the variation include aurora or limb brightening.
先驱者号土星飞船上的双通道紫外线光度计的长波通道观测到了土星系统的几个有趣的云和大气特征。报告了最明显的特征的观测结果，包括与泰坦相关的云、环云和大气发射在土星盘上的变化。关于泰坦的长波数据表明，一个原子氢云至少沿着它的轨道延伸了 5 个土星半径，垂直方向延伸了 1.5 个土星半径。长波通道还观测到了一个被认为是原子氢的环云；它在 B 环附近有显著的增强。最后，对土星盘的空间分辨观测显示出显著的纬度变化。这种变化的可能解释包括极光或边缘增亮。
