Astronomy-friendly security lighting

Details Astronomy-friendly security lighting Astronomy-friendly security lighting

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jbaa..107...91t&link_type=abstract

Journal of the British Astronomical Association, vol.107, no.2, p.91-93

Other

Light Pollution

Scientific paper

In some parts of Britain, housebreaking is a sufficient problem that astronomers must recognise it or be regarded as unworldly. Many houses are fitted with security lights which react to humans (or other animals) and turn on an outside lamp. The detectors in these lamps normally use PIR (passive infra-red) sensors which detect the radiation from warm objects such as mammals. At least two criticisms are levelled at these lamps: (1) they pollute the night sky with light; (2) no-one takes any notice of them turning on, so they merely save burglars the cost of torches. Both of these criticisms can be addressed, at least partially, by the following technique.

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