Spectra of Artificial Light Sources Near Cerro Tololo Interamerican Observatory

Details Spectra of Artificial Light Sources Near Cerro Tololo Interamerican Observatory Spectra of Artificial Light Sources Near Cerro Tololo Interamerican Observatory

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3802w&link_type=abstract

American Astronomical Society Meeting 203, #38.02; Bulletin of the American Astronomical Society, Vol. 35, p.1260

Astronomy and Astrophysics

Astronomy

Scientific paper

I present objective-prism spectra of the major sources of artificial light visible from Cerro Tololo, as part of a study on present and impending light pollution. Spectra were obtained photographically using an improvised (but quite effective) objective-prism technique. Illumination from nearby towns is dominated by high-pressure sodium vapor lights, though a few mercury vapor/halogen lights (belonging to sports venues) are disproportionately bright. A nearby mine has installed low-pressure sodium lights, and the advantage (for astronomers) is obvious.

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