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Author Walker, C.E.; Pompea, S.M.
Title National education program for energy efficient illumination engineering Type Journal Article
Year (down) 2011 Publication Proceedings of SPIE Eco-Photonics 2011, Strasbourg, France, March 2011. Abbreviated Journal
Volume 8065 Issue Pages 80650Q-1
Keywords Skyglow; Illumination engineering; Pollution; Schools and universities; Observatories; Astronomy; Eye
Abstract About one-third of outdoor lighting escapes unused into the sky, wasting energy and causing sky glow. Because of excessive sky glow around astronomical facilities, the National Optical Astronomy Observatory has a strong motivation to lead light pollution education efforts. While our original motivation of preserving the dark skies near observatories is still important, energy conservation is a critical problem that needs to be addressed nationwide. To address this problem we have created an extensive educational program on understanding and measuring light pollution. A set of four learning experiences introduces school students at all grade levels to basic energy-responsive illumination engineering design principles that can minimize light pollution. We created and utilize the GLOBE at Night citizen science light pollution assessment campaign as a cornerstone activity. We also utilize educational activities on light shielding that are introduced through a teaching kit. These two components provide vocabulary, concepts, and visual illustrations of the causes of light pollution. The third, more advanced component is the school outdoor lighting audit, which has students perform an audit and produce a revised master plan for compliant lighting. These learning experiences provide an integrated learning unit that is highly adaptable for U.S. and international education efforts in this area.
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Call Number LoNNe @ kagoburian @ Serial 547
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Author Vázquez-Mata, J.A.; Hernández-Toledo, H.M.; Martínez-Vázquez, L.A.; Pani-Cielo, A.
Title Light pollution around Tonantzintla Observatory Type Journal Article
Year (down) 2009 Publication Proceedings of the International Astronomical Union Abbreviated Journal Proc. IAU
Volume 5 Issue S260 Pages
Keywords light pollution; observatories; sky brightness; Tonantzintla; Mexico; skyglow
Abstract Being close to the cities of Puebla to east and Cholula to the north, both having potential for large growth, the National Astronomical Observatory in Tonantzintla (OAN-Tonantzintla) faces the danger of deteriorating its sky conditions even more. In order to maintain competitiveness for education and scientific programs, it is important to preserve the sky brightness conditions. through: 1) our awareness of the night sky characteristics in continuous monitoring campaigns, doing more measurements over the next years to monitor changes and 2) encouraging local authorities about the need to regulate public lighting at the same time, showing them the benefits of such initiatives when well planed and correctly implemented.
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ISSN 1743-9213 ISBN Medium
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Notes Approved no
Call Number IDA @ john @ Serial 263
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Author Massey, P.; Foltz, C. B.
Title The Spectrum of the Night Sky over Mount Hopkins and Kitt Peak: Changes after a Decade1 Type Journal Article
Year (down) 2000 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal Publ Astron Soc Pac
Volume 112 Issue 770 Pages 566-573
Keywords Kitt Peak; observatories; Arizona; skyglow; light pollution; measurements
Abstract Recent (1998–1999) absolute spectrophotometry of the night sky over two southern Arizona astronomical sites, Kitt Peak and Mount Hopkins, is compared to similar data obtained in 1988 at each site. The current zenith sky brightness in the range ∼3700–6700 Ã… is essentially identical at the two sites and is as dark now as Palomar Observatory was in the early 1970s, when it was generally considered a premier dark observing site. Converted to broadband measurements, our spectrophotometry is equivalent to , mag arcsec−2, for the zenith night sky. The contribution of high‐pressure sodium street lights to broadband V is about 0.2 mag arcsec−2, comparable to the strong airglow O i λ5577 line. During the period from 1988 to 1998–1999, the zenith sky brightness increased only modestly, with the largest changes being seen for Kitt Peak, where the zenith sky has brightened by ≈0.1–0.2 mag arcsec−2 in the blue‐optical region. For Kitt Peak we also have both 1988 and 1999 observations at modestly large zenith distances ( ). In the directions away from Tucson, the sky has brightened by ≈0.35 mag arcsec−2 over the intervening decade. Toward Tucson the change has been larger, approximately 0.5 mag arcsec−2. In most directions the increase in the sky brightness has lagged behind the fractional increase in population growth, which we attribute to good outdoor lighting ordinances, a fact which is further reflected in the decrease in Hg emission. However, our results emphasize the need for diligent attention as developments creep closer to our observing sites.
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ISSN 0004-6280 ISBN Medium
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Call Number IDA @ john @ Serial 264
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Author Benn, C.R.; Ellison, S.L.
Title La Palma night-sky brightness Type Report
Year (down) 1998 Publication La Palma Technical Reports Abbreviated Journal
Volume Issue 115 Pages
Keywords Skyglow; solar cycle; airglow; zodiacal light; light pollution; observatories; *Light
Abstract The brightness of the moonless night sky above La Palma was measured on 427 CCD images taken with the Isaac Newton and Jacobus Kapteyn Telescopes on 63 nights during 1987 – 1996. The median sky brightness at high elevation, high galactic latitude and high ecliptic latitude, at sunspot minimum, is B = 22.7, V = 21.9, R = 21.0, similar to that at other dark sites. The main contributions to sky brightness are airglow and zodiacal light. The sky is brighter at low ecliptic latitude (by 0.4 mag); at solar maximum (by 0.4 mag); and at high airmass (0.25 mag brighter at airmass 1.5). Light pollution (line + continuum) contributes < 0.03 mag in U, approximately 0.02 mag in B, approximately 0.10 mag in V, approximately and 0.10 mag in R at the zenith.
Address Isaac Newton Group, Apartado 321, 38780 Santa Cruz de La Palma, Spain
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Notes Lots of useful theory on the various contributions to natural sky background level and expected surface brightnesses Approved no
Call Number IDA @ john @ Serial 1101
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