Far ultraviolet spectra of the terrestrial airglow were obtained from the lunar surface during the Apollo 16 mission. The spectra cover the wavelength range 490--1600 ¿ with a resolution of about 40 ¿ and the wavelength range 1050--1600 ¿ with a resolution of 30 ¿. Features recorded spectrographically for the first time include He 584 ¿, 0+ 834 ¿, H Lyman &bgr; 1026 ¿, and N+ 1086 ¿. The maximum intensities, and the variations of intensity across the disk, have been determined for individual observed features. Optical depth effects are evident in the disk profiles. Comparisons with previous observations reveal general agreement, but further observations are needed with higher spatial and spectral resolution, particularly in the wavelength range below 1150 ¿. |