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Author Stanjek, K.
Title (down) Zwielicht. Die Ökologie der künstlichen Helligkeit. Type Journal Article
Year 1989 Publication Raben, München Abbreviated Journal
Volume Issue Pages 170
Keywords Animals
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
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Series Editor Series Title Abbreviated Series Title
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 697
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Author Eisenbeis, G.; Hassel, F.
Title (down) Zur Anziehung nachtaktiver Insekten durch Straßenlaternen-eine Studie kommunaler Beleuchtungseinrichtungen in der Agrarlandschaft Rheinhessens. Type Journal Article
Year 2000 Publication Natur Und Landschaft Abbreviated Journal
Volume 4 Issue Pages 145–156
Keywords Animals
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
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Series Editor Series Title Abbreviated Series Title
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 596
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Author Höttinger, H.; Graf, W.
Title (down) Zur Anlockwirkung Öffentlicher Beleuchtungseinrichtungen auf nachtaktive Insekten Hinweise für Freilandversuche im Wiener Stadtgebiet zur Minimierung negativer Auswirkungen. Type Journal Article
Year 2003 Publication Studie im Auftrag der MA 22 (Umweltschutz) Abbreviated Journal
Volume Issue Pages 22:37
Keywords Animals
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language German Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 692
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Author Bará, S.; Tilve, V.; Nievas, M.; Sanchez de Miguel, A.; Zamorano, J.
Title (down) Zernike power spectra of clear and cloudy light-polluted urban night skies Type Journal Article
Year 2015 Publication Applied Optics Abbreviated Journal Appl. Opt.
Volume 54 Issue 13 Pages 4120-4129
Keywords Skyglow; artificial ligh at night; light pollution; Zernike; power spectrum; atmospheric optics; imaging systems; image analysis
Abstract The Zernike power spectra of the all-sky night brightness distributions of clear and cloudy nights are computed using a modal projection approach. The results obtained in the B, V and R Johnson-Cousins' photometric bands during a one-year campaign of observations at a light-polluted urban site show that these spectra can be described by simple power laws with exponents close to -3 for clear nights and -2 for cloudy ones. The second-moment matrices of the Zernike coefficients show relevant correlations between modes. The multiplicative role of the cloud cover, that contributes to a significant increase of the brightness of the urban night sky in comparison with the values obtained in clear nights, is described in the Zernike space.
Address Area de Optica, Dept. Fisica Aplicada. Facultade de Fisica / Facultade de Optica e Optometría Universidade de Santiago de Compostela Campus Sur, E-15782 Santiago de Compostela, Galicia, Spain; salva.bara@usc.es
Corporate Author Thesis
Publisher Optical Society of America Place of Publication Editor
Language English Summary Language English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1156
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Author Bará, S.; Nievas, M.; Sanchez de Miguel, A.; Zamorano, J.
Title (down) Zernike analysis of all-sky night brightness maps Type Journal Article
Year 2014 Publication Applied Optics Abbreviated Journal Appl Opt
Volume 53 Issue 12 Pages 2677-2686
Keywords modeling; light at night; light pollution; all-sky; Zernike polynomials; image decomposition; sky brightness
Abstract All-sky night brightness maps (calibrated images of the night sky with hemispherical field-of-view (FOV) taken at standard photometric bands) provide useful data to assess the light pollution levels at any ground site. We show that these maps can be efficiently described and analyzed using Zernike circle polynomials. The relevant image information can be compressed into a low-dimensional coefficients vector, giving an analytical expression for the sky brightness and alleviating the effects of noise. Moreover, the Zernike expansions allow us to quantify in a straightforward way the average and zenithal sky brightness and its variation across the FOV, providing a convenient framework to study the time course of these magnitudes. We apply this framework to analyze the results of a one-year campaign of night sky brightness measurements made at the UCM observatory in Madrid.
Address Área de Óptica, Dept. de Física Aplicada, Fac. de Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
Corporate Author Thesis
Publisher Optical Society of America Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-6935 ISBN Medium
Area Expedition Conference
Notes PMID:24787595 Approved no
Call Number IDA @ john @ Serial 318
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