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single-axis, short period seismometer sensitive to vertical motion at higher frequencies (resonant period of ~1 sec.) On later ALSEPs, the single vertical sensor frequency was 0.05 to 10 Hz and the 3 orthogonal sensors were sensitive to 0.004 to 3 Hz. It sat on a mounting stool, which raised the unit off the surface. A Mylar skirt surrounded the unit to reduce thermally induced tilts of the local surface around the apparatus. The A-11 instrument was powered by solar panels, the rest by the ALSEP RTG.
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Description/Purpose: The instrument consisted of a seismometer designed to detect moonquakes and impacts. It was considered part of the EASEP on A-11. It contained 3 long-period seismometers with resonant periods of ~15 seconds, aligned orthogonally to measure surface motion in 3 dimensions, and a
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Beschreibung: A close-up of the PSEP as deployed by the Apollo 11 crew (AS-11-40-5953). PI/Engineer: Gary V. Latham, Marine
Biomedical Institute/Galveston, TX Other Contacts: Maurice Ewing, Frank Press Apollo Flight Nos.: 11, 12, 14, 15, 16 Apollo
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joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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PI/Engineer: Gary V. Latham, Marine
Biomedical Institute/Galveston, TX Other Contacts: Maurice Ewing, Frank Press
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If the file has been modified from its original state, some details may not fully reflect the modified file.
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states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
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The following pages on the
English Knowledge use this file (pages on other projects are not listed):
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Beschreibung: A close-up of the PSEP as deployed by the Apollo 11 crew (AS-11-40-5953).
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Dimensions: 23 cm dia., 29 cm high; thermal skirt extended to 1.5 m dia.
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data may be copyrighted if they are not explicitly produced by the
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Apollo Flight Nos.: 11, 12, 14, 15, 16 Apollo Exp't No. S 031
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The NASA website hosts a large number of images from the
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