LUNAR ORBITER IV.
ENTIRE LUNAR DISC, WITH TSIOKOVSKY CRATER AT CENTER.
Silver gelatin print, 20½ by 18 inches. Image IV-0096-M, medium resolution, May, 1967.
A striking photograph showing the entire lunar disc, with Tsiolkovsky crater at center near limb. The objective of Lunar Orbiter IV (LO4) was to provide an expanded photographic survey of the lunar surface, providing far higher resolution imagery than was available from ground based telescopes. Launched on May 4, 1967, LO4 completed 30 successive orbits and took 199 exposures which covered 99% of the lunar surface.
Illustrated in: Cortright, p. 109.