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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 607273.0, MPI für Astronomie / Publikationen_mpia
Measuring the night sky brightness with the lightmeter
Authors:Müller, A.; Wuchterl, G.; Sarazin, M.
Date of Publication (YYYY-MM-DD):2011
Journal Abbrev.:Revista Mexicana de Astronomía y Astrofísica. Serie de Conferencias
Start Page:46
End Page:49
Audience:Not Specified
Abstract / Description:We present a newly developed, low-cost photometer for long-term monitoring of the night sky brightness and light pollution on Earth. The so-called LIGHTMETER is an as far as possible stand-alone operational, fully weatherproof, and maintenance-free device. It provides a high data sampling rate of up to 1 Hz as well as a superb sensitivity covering the whole brightness range down to the darkest night time conditions. The excellent performance of the LIGHTMETER allows a continuously monitoring of the night sky brightness and opens a wide range of applications at an observatory site like determining overall sky conditions in real time, cloud detection and estimation of their velocity, measuring relative changes in extinction as well as the detection of long term trends in brightness caused by an increase of artificial illumination. We will present first results of measurements taken at Cerro Armazones, one of the best observing sites in the world and the selected site of the planned European Extremely Large Telescope (E-ELT). %Z Hayes, D. S., & Latham, D. W. 1975, ApJ, 197, 593 Kieffer, H. H., & Stone, T. C. 2005, AJ, 129, 2887 Rozenberg, G. V. 1966, Twilight: A Study in Atmospheric Optics (New York: Plenum Press), 160 Sarazin, M., & Roddier, F. 1990, A&A, 227, 294
Free Keywords:instrumentation: photometers; light pollution; methods: data analysis; methods: observational; site testing
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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