File:Ac85-0640.png

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Description
English: Original caption: SETI Prototype Equipment Detects Pioneer 10 Signal. The Pioneer 10 spacecraft, radiating a signal with a power of about 1 watt at a distance of 5.3 billion km (3.3 billion miles), produced the trace on the SETI MCSA display. Each line of dots represents the power in 200 frequency channels, each 1/2 Hertz wide, during a two-second observation. The size of the dot represents the power. The Earth's rotation causes the apparent frequency of the signal to change with time. The detection of this signal with the antenna used was only possible because of the high sensitivity of the MCSA system.
Date
Source NASA Ames Research Center
Author NASA Ames Research Center
This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: AC85-0640.

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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Date/TimeThumbnailDimensionsUserComment
current16:10, 24 April 2012Thumbnail for version as of 16:10, 24 April 20121,619 × 1,304 (1,009 KB)Pimvantend (talk | contribs){{Information |Description ={{en|1=Original caption: SETI Prototype Equipment Detects Pioneer 10 Signal. The Pioneer 10 spacecraft, radiating a signal with a power of about l watt at a distance of 5.3 billion km (3.3 billion miles), produced the tra...
16:07, 24 April 2012Thumbnail for version as of 16:07, 24 April 20121,619 × 1,304 (1,009 KB)Pimvantend (talk | contribs){{Information |Description ={{en|1=Original caption: SETI Prototype Equipment Detects Pioneer 10 Signal. The Pioneer 10 spacecraft, radiating a signal with a power of about l watt at a distance of 5.3 billion km (3.3 billion miles), produced the tra...

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