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From supermarket to dome control. (bar code technology used to line up observatory dome's slit)
Science News
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April 5, 1986
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COPYRIGHT 1986 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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From supermarket to dome control
Practically every supermarket product carries a striped patch that can be read by a laser detector at the checkout counter. This code allows a store's computer to identify the product. A modified form of this technology is now showing up in astronomical observatories--to keep a dome's slit properly lined up with the observatory's telescope.
At many observatories, astronomers no longer endure chilly nights standing at a telescope's eyepiece. Instead, they work in comfortable control rooms that may be miles away. But when ...
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