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Author |
Duriscoe, D.M.; Luginbuhl, C.B.; Moore, C.W. |
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Title |
Measuring Night-Sky Brightness with a Wide-Field CCD Camera |
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Journal Article |
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2007 |
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Publications of the Astronomical Society of the Pacific |
Abbreviated Journal |
Publ Astron Soc Pac |
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Volume |
119 |
Issue |
852 |
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192-213 |
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Keywords |
light pollution; light at night; skyglow; monitoring; measurement; CCD |
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Abstract |
We describe a system for rapidly measuring the brightness of the night sky using a mosaic of CCD images obtained with a low-cost automated system. The portable system produces millions of independent photometric measurements covering the entire sky, enabling the detailed characterization of natural sky conditions and light domes produced by cities. The measurements are calibrated using images of standard stars contained within the raw data, producing results closely tracking the Johnson V astronomical standard. The National Park Service has collected hundreds of data sets at numerous parks since 2001 and is using these data for the protection and monitoring of the night-sky visual resource. This system also allows comprehensive characterization of sky conditions at astronomical observatories. We explore photometric issues raised by the broadband measurement of the complex and variable night-sky spectrum, and potential indices of night-sky quality. |
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0004-6280 |
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IDA @ john @ |
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193 |
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Aceituno, J.; Sánchez, S.F.; Aceituno, F.J.; GaladÃ-EnrÃquez, D.; Negro, J.J.; Soriguer, R.C.; Gomez, G.S. |
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Title |
An All-Sky Transmission Monitor: ASTMON |
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Journal Article |
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2011 |
Publication |
Publications of the Astronomical Society of the Pacific |
Abbreviated Journal |
Publications of the Astronomical Society of the Pacific |
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Volume |
123 |
Issue |
907 |
Pages |
1076-1086 |
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Keywords |
monitoring; light at night; light pollution; skyglow |
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We present here the All-Sky Transmission Monitor (ASTMON), designed to perform a continuous monitoring of the surface brightness of the complete night sky in several bands. The data acquired are used to derive, in addition, a subsequent map of the multiband atmospheric extinction at any location in the sky and a map of the cloud coverage. The instrument has been manufactured to withstand extreme weather conditions and to remain operative. Designed to be fully robotic, it is ideal to be installed outdoors as a permanent monitoring station. The preliminary results based on two of the currently operative units (at Doñana National Park, Huelva, and at the Calar Alto Observatory, AlmerÃa, Spain) are presented here. The parameters derived using ASTMON are in good agreement with those previously reported, which illustrates the validity of the design and the accuracy of the manufacturing. The information provided by this instrument will be presented in forthcoming articles, once we have accumulated a statistically significant amount of data. |
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0004-6280 |
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IDA @ john @ |
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195 |
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Lyytimäki, J.; Rinne, J. |
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Title |
Voices for the darkness: online survey on public perceptions on light pollution as an environmental problem |
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2013 |
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Journal of Integrative Environmental Sciences |
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Journal of Integrative Environmental Sciences |
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10 |
Issue |
2 |
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127-139 |
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Keywords |
environmental management; light pollution; public perceptions; survey; public policy |
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Light pollution is increasingly affecting ecosystems and human health. We present results from an online survey aimed to chart what aspects of lighting are considered harmful and how light pollution is perceived by the public. We focus on affluent societies by using Finland as an example of a northern industrialised country. The survey generated 2053 responses, particularly from well-educated urban persons living in residential areas and interested in astronomy or environmental issues. The results show that the lighting of residential areas and lighting serving traffic are considered the most common sources of light pollution while commercial lighting is perceived as the most annoying form of light use. Respondents commonly considered light pollution as a disturbance for outdoor recreation and relaxation. The results suggest that the ecological and health effects of light pollution emphasised by the research are poorly known by the people emphasising the aesthetic aspects. The results indicate relatively wide but passive acceptance for policy measures aimed at reducing light pollution. |
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1943-815X |
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IDA @ john @ |
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248 |
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Author |
Duriscoe, D.M.; Luginbuhl, C.B.; Elvidge, C.D. |
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Title |
The relation of outdoor lighting characteristics to sky glow from distant cities |
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Journal Article |
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2014 |
Publication |
Lighting Research and Technology |
Abbreviated Journal |
Lighting Research and Technology |
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46 |
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1 |
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35-49 |
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Keywords |
measurements; light pollution; light at night; Suomi NPP; satellite; remote sensing; VIIRS |
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Five cities in the southwest United States were selected for an analysis of the impact of outdoor lighting practices on nighttime sky glow as observed from distances of 8–67 km. Data from the Suomi National Polar-orbiting Partnership (NPP) satellite visible infrared imaging radiometer suite day/night band were used to identify light sources for input to an atmospheric sky glow model. Total lumens of outdoor lighting were estimated by matching modelled to observed anthropogenic sky luminance at ground locations. The results of two conservative treatments were then modelled for each city: all outdoor luminaires fully shielded with the current lumen amount, and fully shielded luminaires with a lumen amount scaled to 2075 lm/capita, matching Flagstaff, Arizona. The results indicate 42–88% reductions in average all-sky glow utilizing these ‘best practices’ for environmental conservation. |
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U.S. National Park Service Night Skies Program, Bishop, CA, USA |
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Sage |
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Engligh |
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1477-1535 |
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IDA @ john @ |
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268 |
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Author |
Kyba, C.C.M.; Ruhtz, T.; Fischer, J.; Hölker, F. |
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Title |
Red is the new black: how the colour of urban skyglow varies with cloud cover |
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Journal Article |
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Year |
2012 |
Publication |
Monthly Notices of the Royal Astronomical Society |
Abbreviated Journal |
Monthly Notices of the Royal Astronomical Society |
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Volume |
425 |
Issue |
1 |
Pages |
701-708 |
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Keywords |
Keywords: skyglow; radiative transfer; atmospheric effects; instrumentation: detectors; light pollution |
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The development of street lamps based on solid-state lighting technology is likely to introduce a major change in the colour of urban skyglow (one form of light pollution). We demonstrate the need for long-term monitoring of this trend by reviewing the influences it is likely to have on disparate fields. We describe a prototype detector which is able to monitor these changes, and could be produced at a cost low enough to allow extremely widespread use. Using the detector, we observed the differences in skyglow radiance in red, green and blue channels. We find that clouds increase the radiance of red light by a factor of 17.6, which is much larger than that for blue (7.1). We also find that the gradual decrease in sky radiance observed on clear nights in Berlin appears to be most pronounced at longer wavelengths. |
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0035-8711 |
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IDA @ john @ |
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272 |
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