41. Environment - Light Pollution Top / Society / Issues / Environment / light_pollution www.ctio.noao.edu/light_pollution/iau50/. Dark Skies Northwest http://www.freeaq.net/odp/Society/Issues/Environment/Light_Pollution/

World Wide Web directory Freeaq contents by DMOZ (Last update 21/Sep/2007) Top Society Issues Environment Light Pollution Powered by Category Chats and Forums News and Media Opposing Views Regulation Related Category Society / Issues / Environment / Energy Society / Issues / Environment / Pollution Health / Conditions_and_Diseases / Sleep_Disorders / Search by [ Light Pollution ] Web site in this category Fatal Light Awareness Program (FLAP) Information on how light pollution affects birds, and what steps must be taken to save the lives of birds by reducing lighting. www.flap.org/ Rose City Astronomers: Oregon Dark Skies Includes a information about the effects of light pollution and local darksky sites. www.rca-omsi.org/darkskies.htm Dark Skies Locator Use this site to find a light-pollution-free location. View conditions from various cities around the world. home.hiwaay.net/~krcool/Astro/Night/darksky.htm Illuminating Engineering Society of North America The IESNA is the authority on the lighting industry in the USA, Canada and Mexico and one of the forerunners in the control of this form of pollution. Information available on manufacturers, acceptable designs and lighting codes. www.iesna.org/

42. Astrophotography By Joseph Accurso - Light Pollution Sample Astrophotography by Joseph Accurso captured using a Meade LX90 SCT telescope, SBIG ST-237 CCD camera, and HP945 digital camera. http://astro.baysidedigital.com/light_pollution.html

Light Pollution Sample Light Polluted Sky Dark Sky LX-90 8" f/3.3 - 18 minutes (stack) - ST-237 - Bayside, NY. This photo is from my house in eastern Queens, less than 10 miles from Manhattan. The western sky glows bright orange from the city and the entire sky is blue-ish from surrounding lights. I took this exposure while M1 was towards the "darkest" part of the sky, but sky glow was still a major issue, even after processing not all of the gradient could be removed without losing detail in the nebula. LX-90 8" f/3.3 - 14 minutes (stack) - ST-237 - Southold, NY. This photo is from Custer Observatory on eastern Long Island, a reasonably dark site on the north fork, surrounded by vineyards and homes. It's located about 80 miles from my house and is about a two hour drive. Wind was a factor in this photo, but you can clearly see the advantage of going to a dark site. Processing is minimal in both photos, dark frames subtracted, levels adjusted in Maxim/DL, cropped and usm in Photoshop CS2. New York City Clear Sky Clock Custer Clear Sky Clock NYC Area Light Pollution Map Color Bortle Scale 1. Excellent dark site

43. Canberra Astronomical Society - Light Pollution Light Pollution and Astronomy. By far the biggest problem facing amateur and professional astronomers is excess light. The reason observatories are built in http://www.mso.anu.edu.au/cas/light_pollution.html

Light Pollution and Astronomy By far the biggest problem facing amateur and professional astronomers is excess light. The reason observatories are built in remote areas is to get away from obtrusive lighting, smog and other bad "seeing" conditions, astronomers are not anti-social. A lot of planning must go into site selection to take advantage of the clear steady air in unpopulated areas. It is useless to build a facility that costs millions of dollars only to have its useful life cut short by the growth of a new city. For amateur astronomers the problem of light pollution becomes a nightmare. Light from shops, sports grounds and yard lighting limit, if not end totally, the usefulness of the "backyard observatory". Apart from the simple pleasure of looking at the night sky, the work of some amateurs supplements the work of professionals. These amateurs should be regarded as unpaid professional observers. The main function of a telescope is to amplify light from distant objects, as these objects are very faint. Stray light has the effect of washing out the contrast and reducing the image quality. If you turn up the brightness on your TV you can simulate the effect. The higher the brightness the more the image deteriorates. For an astronomer, that light YOU leave on in the back yard, or those flood lights in the driveway, can mean the end to any chance of using a telescope on all but the brightest of objects.

44. Open Directory - Light Pollution - Environment - Issues - Society light_pollution. Main Society - Issues - Environment - light_pollution . light_pollution. Site map Site map pages http://www.odp.toreuse.pl/Society/Issues/Environment/Light_Pollution.html

Warning : fopen(cache/Light Pollution - Environment - Issues - Society .html) [ function.fopen ]: failed to open stream: No such file or directory in /home/toreuse/public_html/odp/index.php on line Warning /home/toreuse/public_html/odp/index.php on line Warning /home/toreuse/public_html/odp/index.php on line Main Society Issues Environment Latest news for this category: Warning function.curl-setopt ]: CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set in /home/toreuse/public_html/odp/rss2html.php on line Dark-Sky Association to gather in Tucson (FOX 11 Tucson) The International Dark-Sky Association will celebrate it’s 20 th anniversary at it’s annual meeting and conference, June 8 through 10 in Tucson. MORE INFO No comments (LA Weekly) The “Another Toxic School?” article [May 2-8] shows up on the L.A. Weekly Web site as a news piece but it really belongs in the opinion column, since Max Taves didn’t make any effort to contact the Los Angeles Eco-Village about its position on the proposed school. MORE INFO CA Union Stages Leesburg Protest Over Broadlands Hospital (Leesburg Today) Members of the National Nurses Organizing Committee from California gathered in Leesburg Monday morning to show their opposition to the proposed HCA hospital in Broadlands.

45. Light Pollution Abatement Similar pages Exterior Lighting, Statutory Nuisance and Light Pollution De Montfort University (DMU) is an academic institution situated in Leicester, UK. The DMU website contains information about DMU, listings of undergraduate http://www.vts.bc.ca/pgrasc/lpab/light_pollution.htm

Light Pollution Abatement Program Unwanted and wasteful Sky Glow Dark Sky Dangerous Glare form poorly selected and or installed lighting Controlled full cut-off lighting and properly installed ARTICLES: Star light, Star Bright .? An article by Maurice Sluka discussing the problem of light pollution. The Dark Side: Making War on Light Pollution An article from the NewYorker MAPS: Prince George Light Pollution Map Satellite image of British Columbia, check it out you may be surprised! LOCAL INITIATIVES: Draft by-law summitted to the city of Prince George march 2002 covering letter DESIGNATED DARK SKY AREAS: What and Where are they? HANDOUTS: Responsible Lighting Brochure . PDF. (Courtesy of the Calgary Centre L.P.A. LINKS: RASC Light Pollution Abatement Program International Dark Sky Association http://www.rasc.ca/lpa/index.shtml http://www.darksky.org/ Most recent revision November 11, 2007

46. - – IDA ISRAEL SECTION. IDA, . http://www.bareket-astro.com/ida/light_pollution.html dir=rtl

47. If You Were To Write A Song... On Music | BoardReader Started 1 week, 2 days ago (200802-28 192500) by light_pollution. I generally write about whatever is on my mind in a major way. Size 102 bytes http://boardreader.com/t/Music_341151/If_you_were_to_write_a_song_474709.html

My account Login Sign Up Loading... Loading... Search In: Message Boards Images Forums Advanced search ... Home If you were to write a song... Thread profile page for "If you were to write a song..." on http://www.teenspot.com . This report page is a snippet summary view from a single thread "If you were to write a song...", located on the Message Board at http://www.teenspot.com. This thread profile page shows the thread statistics for: Total Authors Total Thread Posts , and Thread Activity , which are reported in a table below. Additional thread profile information is also shown in the following ways: 1) Top Contributing Authors 2) Related Threads on "eBay Auctions" 3) Related Threads on Other Sites Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a thread's popularity and/or exact posting volumes at any given reporting period. Title: If you were to write a song... Site: TeenSpot.com - Teen Message Boards

48. Light Pollution - London Borough Of Richmond Upon Thames http//www.richmond.gov.uk/light_pollution. © London Borough of Richmond upon Thames, Civic Centre, 44 York Street, Twickenham TW1 3BZ, Telephone 020 8891 http://www.richmond.gov.uk/light_pollution

Skip to main content Text only Printer-friendly version Languages ... Help Search this Site Home A to Z Online services Councillors ... Site Map You are in: Home Environment and planning Pollution Light pollution Home Environment and planning Pollution Air pollution ... Land contamination Light pollution Mobile phone health effects Water pollution Noise pollution Light Pollution From April 2006 the nuisance provisions of the Environmental Protection Act 1990 have been extended by the Clean Neighbourhoods and Environment Act to cover artificial light emitted from premises (excluding transport facilities, freight depots, lighthouses, defence premises and prisons). Abatement notices can be served by the Council if light, for example from domestic security lights, is causing a nuisance. For light to be a nuisance it would have to materially affect someone's use of their home, or their health, based on average sensibilities. On receipt of complaints about nuisance lighting, we will contact the owner of the light to suggest that they contact the occupiers of neighbouring properties to ensure that lighting on their premises is not causing a disturbance. Complainants are advised to keep a record of the times and the duration of alleged nuisance should they wish to pursue the matter further. If problems are not resolved an officer will investigate whether, in their opinion, the light is causing a nuisance. For more information see Statutory Nuisance.

49. Http//www.gleaming.org/ Http//www.gleaming.org/%C3%B5dagun%C3 http//www.gleaming.org/light_pollution/images.htm http//www.gleaming. org/light_pollution/news.htm http//www.gleaming.org/light_pollution/shopping.htm http://www.gleaming.org/sitemap.xml

50. GameSpot Forums - WindJammers - ATTN: Skull http//en.wikipedia.org/wiki/light_pollution br/ br/ i Light pollution, also known as photopollution or luminous pollution, is excess or obtrusive light http://www.gamespot.com/neo/sports/flyingpowerdisc/show_msgs.php?topic_id=m-1-41

51. Search Results http//www.eastdevon.gov.uk/e_hlight_pollution Coverage Spatial east devon district council Subject Category. 14k. Light Pollution (View page through http://portalstaging.devonline.gov.uk/aretterdvl/text/index/search_results.htm?&

52. Light Pollution - Wiktionary Retrieved from http//en.wiktionary.org/wiki/light_pollution . Category English nouns. Views. Entry Discussion Edit History. Personal tools http://en.wiktionary.org/wiki/light_pollution

light pollution Definitions from Wiktionary, a free dictionary Jump to: navigation search Contents English Noun Related terms Translations ... edit English Wikipedia has an article on: Light pollution Wikipedia edit Noun Singular light pollution Plural uncountable light pollution uncountable An excess of artificial light , especially near urban developments, reducing visibility of stars etc. in the night sky edit Related terms over-illumination sky glow edit Translations excess artificial light Dutch: lichtvervuiling f Finnish: valosaaste fi (fi) French: pollution lumineuse f German: Lichtverschmutzung f Italian: inquinamento luminoso m Japanese: Spanish: contaminaci³n lum­nica f Retrieved from " http://en.wiktionary.org/wiki/light_pollution Category English nouns Views Entry Discussion Edit History Personal tools Log in / create account Navigation Main Page Community portal Requested entries Recent changes ... Contact us Search Toolbox What links here Related changes Upload file Special pages ... Permanent link This page was last modified 13:04, 4 May 2008. Content is available under GNU Free Documentation License About Wiktionary

53. Light Pollution - Slackerpedia Galactica friendly equipment from Starry Night Lights (commercial link). Retrieved from http//www.slackerastronomy.org/slackerpedia/index.php/light_pollution http://www.slackerastronomy.org/slackerpedia/index.php/Light_Pollution

Light Pollution From Slackerpedia Galactica Jump to: navigation search Salt Lake City from the air Photo by Brian Jolley Contents Introduction Light Pollution and Astronomy Workarounds External Links Introduction Light pollution is the light that escapes upwards or side-wards from means of illumination at night. The normal usage is light that causes the viewer's eyes to be desensitised to the light from the stars and other cosmic sources. However, 'trespass' can also occur when a neighbour's light gets into another's property when it is not wanted. Unwanted light can disrupt ecosystems , cause adverse health effects, obscure stars to city dwellers, interfere with astronomical observatories , waste energy , and fade curtains (the same as daylight saving Light Pollution and Astronomy Light pollution is the junk that visible light photons have the nerve to throw into the sky. It is the natural predator of the dark sky . Light pollution is noticeable in densely populated areas that have bright, uncovered lights. If you can't see the stars at night because the neighbor's porch light is shining in your eyes, that's light pollution. They may say it's for safety, but they aren't safer, and you can't see the stars. Light pollution annoys astronomers and robs much of Earth's population of the opportunity to enjoy the night sky . Light pollution is also a threat to wildlife. All species of sea turtles native to Florida waters are listed as either threatened or endangered, and according to the

54. The LEC WWW Server: Frequency Of Access: Items RAN 26 /usage/weeks/lec.84.html 26 /~julyan/blog/index.cgi/posts/light_pollution. html 26 /abstracts/abstracts/a2000_14.htm 26 /~luis/? http://www.lec.csic.es/usage/weeks/requests/lec.311.total-accesses.html

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55. Page Not Found Web Resources Directory on this Issue. the entire directory, only in Environment/light_pollution. Top Society Issues Environment Light Pollution (93) http://www.awb.org/cgi-bin/apexec.pl?etype=odp&passurl=/Society/Issues/Environme

56. USNews.com: Light Pollution www.usnews.com/usnews/photography/ light_pollution/interface.php 4k - Cached - Similar pages astronomyLINKS - light pollution - astronomy and space directory astronomylinks.com - light pollution - issues, politics, activism The source for the best astronomy and space related links from around the world including http://www.usnews.com/usnews/photography/light_pollution/interface.php

57. OASI - Light Pollution Light Pollution. At the beginning of the 21st century, humanity is losing a valuable and beautiful part of its heritage. For the first time in history, http://www.ast.cam.ac.uk/~ipswich/CfDS/Light_Pollution.htm

Light Pollution At the beginning of the 21 st century, humanity is losing a valuable and beautiful part of its heritage. For the first time in history, poorly designed and badly aimed lighting is denying vast numbers of humanity a view of the night sky. Urban sky glow now pollutes nearly all of Britain's night skies. As amateur astronomers we have a responsibility to guard our night time environment against light pollution. What is light pollution? Light pollution is the popular name for sky glow - a brightening of the night sky caused by the scattering of artificial light by aerosol particles (e.g. water droplets) and dust in the air. What causes light pollution? Artificial light gets up into the sky in two ways. By far the greater proportion of upward light arises because the design or installation of many light fittings allows a significant fraction of the light produced to be emitted above the horizontal, so it goes up into the sky - this is the direct upward light. A much smaller proportion is upward light is reflected upwards from roads, pavements and buildings - this is the indirect upward light. The following image of the Earth at night compiled by NASA from various spacecraft missions shows the extent of light pollution across the whole world: few areas of our planet are visibly dark at night!

58. Light Pollution This image shows the lights of Earth as seen from a satellite orbiting our planet. Click on image for full size (66 Kb) Image courtesy of NASA, DMSP, http://www.windows.ucar.edu/tour/link=/the_universe/light_pollution.html

Light Pollution This image shows the lights of Earth as seen from a satellite orbiting our planet. Click on image for full size ( 66 Kb Image courtesy of NASA, DMSP, and NOAA NGDC. What is light pollution? Simply put, light pollution is the unwanted illumination of the night sky created by human activity. Light pollution is sometimes said to be an undesirable byproduct of our industrialized civilization. Light pollution is a broad term that refers to multiple problems, all of which are caused by inefficient, annoying, or arguably unnecessary use of artificial light. Specific types of light pollution include light trespass over-illumination , and sky glow Where is light pollution found? The now-classic Earth at Night composite image (left) suggests that light pollution is a problem in many parts of the world, with the worst concentration of light pollution being found in urbanized areas. In the highly industrialized and populated areas such as many parts of Europe, Asia, and North America, light pollution is a real problem. For example, in the Eastern United States, there are many areas where large expanses of land are illuminated at night. As cities and suburban areas grow, the number of lights at night also increases. Why do we care about light pollution? Light pollution is a strong indicator of wasted energy. Lights, contrast, and glare all impact the

59. Light Pollution This article first appeared in the Charlotte Observer in January of 1996, and is reprinted on this website, with the kind permission of the Charlotte http://www.geocities.com/capecanaveral/6389/Light_Pollution.htm

This article first appeared in the Charlotte Observer in January of 1996, and is reprinted on this website, with the kind permission of the Charlotte Observer . Although this article was written specifically about the city of Charlotte, it is not just a local problem that only affects Charlotte. It is a problem that is common to ALL major metropolitan centers, and that is why we have elected to reprint this article here. LIGHT POLLUTION: WHEN THE NIGHT NEVER GETS DARK MAN-MADE LIGHT FLOODS THE NIGHT SKY, BLOTTING OUT THE MOON AND STARS, AND GLARING THROUGH THE BLINDS. Published: Thursday, January 4, 1996 Section: VIEWPOINT By DANIEL B. CATON, Special to The Observer           Imagine a National Park where we permitted the scenic views to be needlessly polluted with man-made refuse to the point where we could only barely see the most prominent features. Subtle valleys and glades are filled to the brim, with only the greatest peaks rising above a sea of litter. Suppose further that this trashing of the environment was not intentional, but allowed to advance even though the alternative is less costly and would save other natural resources.          This park is not official, but also not imaginary - it's very real. And, it's in your backyard. More exactly, it is above your yard: It is the night sky.

60. Manchester Astronomical Society Forthcoming Events A short page explaining how lighting can be made to reduce the astronomical effects of pollution by Manchester Astronomical Society. http://www.mikeoates.org/mas/light_pollution.htm

A Solution for the Problem of Light Pollution by Ashley Knowles In association with the Manchester Astronomical Society Introduction As we approach the millenium, most amateur astronomers are acutely aware of the problems of light pollution and the difficulties associated with observing the night sky in heavily populated areas. They also probably feel that things will only get worse. Light pollution is a rather all-encompassing expression describing the light which hinders observation. It has several sources, including natural ones such as the light generated by the bombardment of the upper atmosphere by solar radiation. However, the most pervasive source of light pollution is the glare associated with the street lighting in built up areas. Short of moving house, there is little the individual urban amateur astronomer can do to eliminate this problem. There is some hope, however. Filtering the light pollution and viewing only the wavelengths of light of interest is one way of achieving good results. A recent lecture at Manchester Astronomical Society illustrated the manufacturing technology which is used to make filters to reject the unwanted light. This brief paper describes the efforts under way in Manchester to make routine light pollution filtering a realistic goal.

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