Tousey R, Bartoe J D, Brueckner G E, Purcell J D
Appl Opt. 1977 Apr 1;16(4):870-8. doi: 10.1364/AO.16.000870.
The XUV spectroheliograph, Apollo Telescope Mount experiment S082A, is described. The instrument was a slitless Wadsworth grating spectrograph that employed photographic recording. The grating was of 4-m radius, ruled with 3600 grooves/mm. By rotating the grating to positions where the normal was at 255 A or 400 A, the spectral ranges 175-335 A and 320-480 A, respectively, were covered with 2-sec of arc spatial resolution. Close to the normal the resolution reached 2 sec of arc, but at the extreme limit, 630 A, it was 10 sec of arc or worse. The aberrations of the instrument are discussed in detail as are the provisions necessary to maintain optimum imagery and reliability in a space environment. During the mission about 1020 exposures were made covering 171-335 A or 320-630 A.
描述了极紫外太阳摄谱仪，即阿波罗望远镜装置实验S082A。该仪器是一台无狭缝的沃兹沃思光栅摄谱仪，采用照相记录。光栅半径为4米，刻线密度为3600线/毫米。通过将光栅旋转到法线位于255埃或400埃的位置，分别覆盖了175 - 335埃和320 - 480埃的光谱范围，空间分辨率为2角秒。靠近法线时分辨率达到2角秒，但在极限波长630埃处，分辨率为10角秒或更差。详细讨论了该仪器的像差以及在太空环境中保持最佳成像和可靠性所需的条件。在任务期间，大约进行了1020次曝光，覆盖171 - 335埃或320 - 630埃。
