تفاصيل

Letter from K.A. Bauer, Carl Zeiss, Inc. to Maude Bennot, Director of the Adler Planetarium

ZPC.S2.F1.10

Letter addressing the problem of the moon projection, stating that the Zeiss factory confirmed that part 437 [gold mirror] is perfectly round and that the poor image noted by Adler Planetarium could be due to (1) poorly adjusted bulb or (2) projection surface is not plane.

One page, 8.5 x 11 inches

Maude Bennot, K. A. Bauer, Adler Planetarium, Carl Zeiss Works

textual record

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