I am a frequent visitor of the University of Maryland Observatory. The observatory has an ongoing “yard sale” of old things (textbooks from before quasars were discovered, old lenses, photographic plates for $1 a piece). At a public lecture and viewing night about a year ago, I came across three priceless original Lunar Orbiter posters from the late ’60s for 50 cents a piece. They were on photographic paper and had penciled in altitudes. The Lunar Orbiter probes are especially interesting to me because they were used to identify a smooth landing spot for the Apollo missions.
For two of the close-up view LO posters, I was able to identify the lat/long on the moon by comparing the slide numbers on the negative frame to the corresponding number in the Lunar Orbiter Photographic Atlas of the Moon. The oblique picture shown here has been a mystery. I’m assuming this is a Lunar Orbiter 2 picture because of the “II” in the negative frame, but I can’t locate the slide number. The numbers in the negative frame don’t match the photographic atlas.
(My other fascinations like who may have owned this poster, whether or not it came from NASA, and whether it was directly used to help identify an Apollo landing site will have to go unanswered.)
The romance of the LO probes circling the moon before man ever walked on it inspired a brief haiku:
Virgin lunar soil
so close beneath the moon probe
a ripe plum unpicked.