USAF lunar reference mosaic, LEM-1. Lunar earthside hemisphere in orthographic projection. ACIC.
USAF lunar reference mosaic, LEM-1. Lunar earthside hemisphere in orthographic projection.
USAF lunar reference mosaic, LEM-1. Lunar earthside hemisphere in orthographic projection.

USAF lunar reference mosaic, LEM-1. Lunar earthside hemisphere in orthographic projection.

St. Louis: Aeronautical Chart and Information Center, 1962.

2nd Edition. No Binding. Very Good. Item #003203

2nd edition, November 1962. Scale 1:5,000,000. Single lithographed sheet, size 34 x 35 in. (864 x 889 mm, lunar diameter 27 in). The map with a few marginal kinks, but generally well preserved. ----

"The USAF Lunar Reference Mosaic (LEM) is a composite photo mosaic of the moon produced from selected photographs taken at Mt. Wilson, McDonald and Pic du Midi Observatories. Sections of twenty-four photographs were chosen which would provide a constant sun angle in order to maintain a uniform portrayal of lunar craters and prominences. This mosaic was compiled to an orthographic projection which shows the moon as a sphere as viewed from an infinite distance. Position was determined through the use of selenographic control established primarily from the measures of Franz and Saunder as compiled in the Orthographic Atlas Of the Moon, edited by G. P. Kuiper in 1960. Each photograph was copied to a common scale and rectified to mean libration in order for it to match or fit adjacent sections. The USAF Lunar Reference Mosaic was originally compiled In February 1960 and published at the 1:5,000,000 scale. In 1962 it was recompiled with improved photo imagery and issued in the three existing sizes. Subsequent revisions have been limited to updating names. This series of lunar mosaics have been one of the most popular items in the lunar map inventory. They have been very much in demand for use as a wall display and as a base for various indices. All three sizes of LEM are lithographed in duotone blue and gray against a solid black background." (NASA LPI online resource).

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