Voyager Enters Final Frontier Of Solar System |
Voyager Enters Final Frontier Of Solar System |
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Jun 3 2005, 10:47 PM
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http://planetary.org/news/2005/voyager-upd...ation_0524.html
Voyager 1, the most distant human-made object in space, has crossed the termination shock, the last major threshold in the solar system, team members announced today at the annual American Geophysical Union (AGU) meeting in New Orleans, Louisiana. |
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Dec 3 2011, 02:49 AM
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Senior Member Group: Members Posts: 1592 Joined: 14-October 05 From: Vermont Member No.: 530 |
http://vega.lpl.arizona.edu/voyager_uvs/instrument.html
It's pulse counting on the 128 channels that form the spectrum. From the supplement: QUOTE For our specific purpose of a high precision and bias-free Ly determination we have devised a new reduction and analysis pipeline, improved from the technique used earlier (33). The Voyager UVS (Ultra-Violet Spectrometer) has a field of view of 0.1x0.87 defined by a mechanical grill collimator. Light that passes through the collimator reaches a concave grating, which disperses and focusses the light onto the microchannel plate (MCP) detector. A single photo-electron created at the input of the MCP generates a pulse of many electrons at the output, and this charge is collected on a linear array of 128 elongated anodes (channels) that correspond to the 540 to 1700 Å range. One anode covers 9.26 Å. Charges on the anodes are periodically sampled and subjected to threshold detection; detected events are summed into 128 corresponding memory locations to form a spectrum. So no, not really a picture. And that is coupled with two Azimuth directions. |
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