41. Royal Astronomical Society Of Canada - Light Pollution Abatement Explains how the problem is and can be tackled in Canada with the LPAP. Contains helpful Canadian information. http://www.rasc.ca/light/

Site Search Home The Society Publications Education ... News Light Pollution Abatement Program Light Pollution Abatement Home Dark Sky Designations Certificates of Merit LPA Discussion Group ... LPA Committee New Items The Vanishing Night YouTube Video Added 2010/10/28. IES-IDA MLO 1.7 MB PDF Added 2010/10/28. RASC Position on MLO Updated 2010/11/02. Gordon's Park Dark Sky Preserve Added 2010/07/26. Dark Sky Site Guidelines Added 2009/12/02. Sky Quality Measurement Project Light Pollution Abatement Program Overview The goal of the RASC Light Pollution Abatement (LPA) Program is to reduce the levels of light pollution in urban and rural areas by advising Federal, Provincial and Municipal governments and departments along with business and concerned citizens to take action to reduce unnecessary glare uplight and light trespass Cinzano Canada Image, showing Light Polluted Areas. White areas, are very heavily light polluted. Black=" dark sky" and White ="light polluted". It is a constructive and advisory program that encourages meetings at the local l evel between concerned citizens and governments, business and the media to inform and advise these groups on the problems created by light pollution. We provide practical recommendations to reduce obtrusive lighting. The program is managed by the RASC

42. Light Pollution Skyglow / Light Pollution JPEG, GIF, TIFF. Experimental image modeling light pollution in the continental United States. This is based on the location and population (1990 http://laps.noaa.gov/albers/slides/ast/places.html

Skyglow / Light Pollution JPEG GIF TIFF Experimental image The image is a plot of expected sky glow at the zenith. Light pollution from a city is assumed to be related linearly to the population and the inverse 2.5 power of the distance (as in Walker's law). The relation used here is I = 11300000 x population x r^-2.5, where I is in nanoLamberts and r is in meters. This is corrected for earth's curvature at large distances (this necessity was pointed out by Roy Garstang). This is currently done by calculating what fraction of the air molecules and other scatterers over the observer lie within the earth's shadow as seen from the city. The overall scale height for these scatterers (defined as the incremental height required to see a drop off by a factor of 2.718) is currently set to 4000m. This is less than the "clear air" value of 8000m to account for a modest amount of aerosols. A number of ideas and equations used come from publications by Roy Garstang The assumed radius of each city is a function of city population, ranging from 2.5 km to 24 km. Walker's law applies if we are outside the city radius. Inside the city radius, the sky glow increases linearly toward the center by another factor of 2.5. A value for the natural sky glow is added onto the light pollution contribution. The natural sky glow is assumed to be equal to 60 nanoLamberts (V = 21.9 mag / sq sec) at solar minimum. The last step in arriving at a pixel value is scaling the brightness with respect to the logarithm of the sky glow. The brightest city has pixel values of (255,255,255), and the darkest country site has pixel values of (42,52,67). The calibration bar is intended to linearly represent the sky brightness in terms of magnitudes per square arcsec.

43. Dark Skies For The Adirondacks Online community of New York anti-light-pollution campaigners with photographs, newsletters, legislation and other local resources. http://www.timesunion.com/communities/darksky/

44. Light Pollution | The New Rules Project Each night almost of a third of the light used outof-doors escapes into the night sky where, instead of providing useful illumination, it causes glare, sky glow and other types of http://www.newrules.org/environment/rules/light-pollution

45. Light Pollution: The Bane Of Astronomer Amateur And Professional, LiteLynx List Amateur Astronomer's Notebook Light Pollution The Bane of Astronomers (Amateur and Professional) The view almost all of us had from home only 25 50 years ago and what the http://www.rocketroberts.com/astro/litepol.htm

Updated 19 November 2007 Amateur Astronomer's Notebook Light Pollution The Bane of Astronomers (Amateur and Professional) The view almost all of us had from home only 25 - 50 years ago... and what the vast majority of Americans now see from their backyard. These photos show approximately the same area of the sky; one was taken from a dark sky site and one was taken from outside a small city (Springfield, MA). Which scene do you find more appealing? Would you be pleased to learn that you as a taxpayer are likely paying money to produce some of the scourge seen on the right? New Feature! Click the above graphic to see some of the best and worst examples of lighting in Wilbraham MA. Introduction Light Pollution is a serious problem for most amateur astronomers today (see the pictures just above). The picture on the left was taken at a dark sky location (Colebrook, CT USA); the photo on the right was taken from Wilbraham MA USA looking towards Springfield, MA (A city of about 200,000 people). The light pollution in the Springfield MA area is very bad (and Springfield is considered a small city by most people). Unless you live way worse visibility because of the excessive glare they produce. Everyone can benefit from improved lighting; lower tax bills, less air pollution, improved visibility and more. It is in the best interest of everyone to reduce light pollution!

46. Rose City Astronomers Includes a information about the effects of light pollution and local darksky sites. http://www.rosecityastronomers.org/resources/ida.htm

Home About RCA Information Officers Membership Outreach ... Sister Clubs Observing Schedule Observing Sites Star Party Tips AL Awards ... Observing Site Fund Members RCA Forum Forum Recent Posts Forum Instructions Special Interests ... Magazines Knowledge Base Resources Member Websites Links Site Index Oregon Dark Skies Rose City Astronomers are proud members of the International Dark Sky Association. News, articles, multimedia and more from the IDA! The RCA IDA Chairman is Dawn Nilson who can be reached at ida@rosecityastronomers.org Why are engineers, medical professionals, and amateur astronomers, concerned about the effects of Light Pollution? Some studies show: the effects of not sleeping in total darkness can degrade the immune system of animals and humans. Poor lighting and wasted energy is misuse of electricity and money. Misdirected light, 'Light Trespass' is a nuisance and architecturally unappealing. Studies show that various uses of lighting may actually increase crime, just exactly the opposite of what people try to achieve. The light pollution from inferior lighting design on highways creates a hazard to driving known as 'Road Glare.'

47. Darkskyinstitute.org The Moon creates its own monthly style of light pollution, but when it is in the sky it provides a very interesting target of observing opportunity. http://darkskyinstitute.org/light.html

DARK SKIES Wow, this is one fantastic photo isn't it? Think again! A view of the U.S. and the light we waste. A really fantastic photo would show nearly all black with just a few little white dots. Can you find your town or city? It may seem impossible to darken the skies over America and reclaim your view of the magnificent Milky Way, but it's not! Please search the following for solutions to light pollution: Save the Milky Way A nighttime satellite view of the upper midwest showing the light pollution of cities and towns below. Little Ames, Iowa, is located almost exactly at the center of the image. Chicago is on the right and Minneapolis is at the top. Trace the line of lights marking I-80 westward from Chicago through the Quad Cities, Des Moines, and Omaha. Ames is straight north of Des Moines about 35 miles. How would you like to try to be a stargazer in Chicago? This image has a resolution of about 2.7 kilometers or 1.6 miles. Click on the image to make it larger. This is a DMSP photo.

48. Light Pollution – Free Listening, Videos, Concerts, Stats, & Pictures At Last. Watch videos listen free to Light Pollution Good Feelings, Oh, Ivory! more, plus 9 pictures. Midwesterners often feel obligated to apologize for/complain about their http://www.last.fm/music/Light Pollution

Last.fm Music Radio Events ... Join English Help Come work with us! Last.fm is hiring » Deutsch Español Français Italiano Polski Português Руccкий Svenska Türkçe Artist Biography Pictures Videos ... Play Light Pollution Radio Light Pollution On Tour 47,445 plays (8,665 listeners) In your library (0 plays) Send Light Pollution Ringtones to Cell Buy Send Ringtones to Cell Tonefuse Search Add to my Library Midwesterners often feel obligated to apologize for/complain about their landscape. Chicago’s Light Pollution does not. The contrasting feelings of wonderment and isolation evoked by the frozen Midwestern plains deeply pervade their sound. 23-year-old songwriter James Michael Cicero grew up in the suburbs of Chicago, the son of Italian and Spanish Catholics. His grandfather was a first-generation Spanish immigrant trumpet player who moved to Chicago to lead a Big Band; aspirations that did not ensure financial stability. As a result, when Cicero bought his first guitar at the age of seventeen, his father took to locking it in the attic. Cicero left for college in Dekalb, IL, met drummer Matt Evert, obsessively wrote songs in class, and soon dropped out. Over the following years, the two honed their skills and sensibilities, eventually acquiring Nick Sherman and Jed Robertson; evolving into what is now Light Pollution.

49. Palomar Observatory & Light Pollution Light Pollution and the Palomar Observatory Milky Way over Palomar photo by Wally Pacholka of AstroPics.com. What is Light pollution? Light pollution is any adverse effect of http://www.astro.caltech.edu/palomar/lp.html

Palomar Observatory Home Visiting Friends Public Outreach ... History Light Pollution Observer's Information Caltech Astronomy Light Pollution and the Palomar Observatory Milky Way over Palomar photo by Wally Pacholka of AstroPics.com What is Light pollution? Light pollution is any adverse effect of light caused by society. Light pollution is an increasing problem for observatories everywhere. One of the reasons Palomar Mountain was selected as the site for the 200-inch telescope was its dark skies that would allow observation of the faintest galaxies without the interference of city lights. Since 1934, rapid urbanization of southern California has resulted in a significant increase in the amount of sky glow. If such light pollution continues to increase, it will seriously reduce the effectiveness of the Palomar Observatory for many types of research. This simulation (3.6 mb) shows how the increase of light pollution over time makes the night sky harder and harder to see not only for astronomers working at Palomar, but for everyone all over the Southern California region. Click to Enlarge Nighttime Panorama from Palomar Observatory This partial panorama looks southwest (left), through north (center, towards the 200" dome), to northeast (right). It reveals the sky glow caused by lights in San Diego County (left), Riverside County (center) and Palm Springs (right). Photographed February 4, 2005

50. SkyandTelescope.com - Saving Dark Skies Various articles about light pollution including one on the history of the problem, one on rating the darkness of your sky, one on how astronomers can do more to help reduce light pollution and one on good lighting fixtures. http://skytonight.com/resources/darksky/

51. The Night Sky In The World The night sky in the World DMSP satellite monitoring of the artificial night sky brightness and the stellar visibility - light pollution - sky glow http://www.lightpollution.it/dmsp/index.html

Istituto di Scienza e Tecnologia dell'Inquinamento Luminoso Light Pollution Science and Technology Institute The night sky in the World Home Page How we surveil the situation of the night sky with satellites The DMSP satellite and its Operational Linescan System The World Atlas of sea level artificial night sky brightness ... The night sky live All rights reserved The night sky in the World Satellite monitoring of the artificial night sky brightness and the stellar visibility The interest for the protection of the night sky from light pollution is growing every day. A global scale periodic monitoring of the situation is necessary. Nighttime images of the Earth at night have been obtained from the Defense Metereological Satellite Program (DMSP) of the US Air Force since early '70. The first global image was obtained by Woodruff Sullivan in late '80. These images only showed the geographic distribution of the sources on the Earth surface because the satellite detectors were saturated by the strong flux emitted by them and no quantitative measurements were possible. Since 1998 unsaturated data become available, allowing quantitative measurements of the upward light flux emitted by sources.

52. BILL INFO-2001 Regular Session-HJ 14 Resolution to create a taskforce to combat light pollution in the state. http://mlis.state.md.us/2001rs/billfile/HJ0014.htm

2001 Regular Session bill information current as of December 5, 2001 - 11:32 p.m. Sponsors Title Synopsis History ... HOUSE JOINT RESOLUTION 14 JOINT RESOLUTION NUMBER: 12 File Code: Natural Resources - Generally Sponsored By: Delegates Kopp, Barkley, Bronrott, Cadden, Clagett, Conroy, Cryor, D'Amato, Dypski, Goldwater, Grosfeld, Harrison, Howard, Hubbard, Hubers, Hurson, Love, Mandel, McIntosh, Menes, Morhaim, Petzold, and Shriver Entitled: Task Force to Study Lighting Efficiency and Light Pollution in Maryland Synopsis: Establishing a Task Force to Study Lighting Efficiency and Light Pollution in Maryland; requiring the Task Force to study the cost, extent, causes, and consequences of current public lighting standards and policies and light pollution in Maryland; providing for the membership and appointment of the Task Force; requiring the Department of General Services to coordinate the professional and administrative support of the Task Force; and requiring the Task Force to issue a final report to the General Assembly by February 1, 2002. History by Legislative Date House Action First Reading Appropriations Hearing 3/6 at 11:00 a.m.

53. Light Pollution | STAR Astronomy Light Pollution, It's Time For Action. Can anything be done about light pollution? How can all of the misdirected and excessive lighting that causes so much sky glow be avoided? http://www.starastronomy.org/light-pollution

Home Events Forums Spectrogram ... Home Light Pollution Light Pollution, It's Time For Action Can anything be done about light pollution? How can all of the misdirected and excessive lighting that causes so much sky glow be avoided? Most press coverage and magazine articles present light pollution mainly as an astronomy problem, emphasizing that sky glow prevents observing the starry night sky. Many amateur astronomers feel that the key to solving the problem is this kind of awareness - and that's how to get it fixed. As a member of the Eatontown Environmental Commission in the early 1990s, I originally presented the issue of Light Pollution (LP) to local members primarily emphasizing the impact of sky glow when observing the night sky. The reaction regarding the need for a local LP ordinance was meager, even though I also talked about glare, trespass and energy. At that time most of my information was taken from International Dark Sky literature, which I acknowledged when asked. Unfortunately, special interest organizations such as the IDA are sometimes looked upon by municipality people with some skepticism. They assume such lobby groups often exaggerate or say anything to push their agenda. I spent the next few months educating myself by studying Illuminating Engineering Society of North America (IES) literature and talking with various IES committee members. I approached my local Environmental Commission again, but this time I concentrated my discussion on how LP affects the general public, not astronomers. My reference to sky glow was that it is a kind of "smoking-gun-evidence" of misdirected, excessive and wasteful lighting. I conducted a tour to show actual examples of existing Eatontown lighting, both good and bad, to illustrate the need for an ordinance.

54. Dark Sky Czech Republic Gives information, letters and press releases about the Czech light pollution law, parts of the law, images of various lighting fixtures, light-pollution software and contact details for members. http://www.astro.cz/darksky/

After a server crash the page has been renewed from a summer 2007 version... before it will be updated, one current link at least: maps for Globe at Night A breakthrough law on light pollution has been issued in Slovenia in 2007: Press release directory with further information Night Environment Pollution and the Remedies through Legislation and Technology, in Czechia and in general The main principle is simple, don't use artificial lighting outdoors when and where it's not necessary let the light go just the right direction: down (and steep enough) Lighting fixtures with no down-protruding belly (a flat glass instead) do the job, (if lighting is really needed) like these in central Europe: eco-settlement in Kassel Strasse der Solarenergie in Gleisdorf in front of Brno railway station parking lot in front of the museum in Gleisdorf The best possibility ever to learn the best exiting knowledge at this field is the conference Light Pollution and Global Warming , at lake Bled, Slovenia, October 5-6, 2007. See more in the outstanding conference brochure at www.darksky2007.si

55. Light Pollution Light Pollution a collection of links to web sites with information on light pollution issues. http://www.umich.edu/~lowbrows/light/

Light Pollution Light Pollution In response to this, some communities have set up light pollution ordinances. However the problem has not been solved and greater awareness of light pollution is needed (a few organizations are attempting to educate the public on this issue). The types of lights that interfere with astronomy are not necessary: they waste electricity, cause excess pollution, but can easily be replaced with more efficient lighting that still illuminates the ground without sending as much light into the sky. Join the Light Pollution Study (March 22-29, 2006) Globe at Night. Resources If you live in Southeast Michigan, you may find the following link useful Southeast Michigan Light Pollution Issues. For general information about light pollution issues, use the following links: International Dark-Sky Association. (http://www.darksky.org/) Light Pollution Awareness Website. (http://members.aol.com/ctcadman/) For an extensive list of light pollution links: Light Pollution Internet Links . (http://members.aol.com/ctcadman/LiteLynx.htm) Astronomy Picture of the Day: Earth at Night.

56. CIE - INTERNATIONAL COMMISSION ON ILLUMINATION Technical information and guides to the design of non-polluting lighting. Includes links to similar regional organizations. http://www.cie.co.at/

57. The Dark Night Goes Quietly - Astronomy Magazine It has lobbied state and local government for an increased awareness to the consequences of light pollution. Although founded and primarily managed by astronomers, the IDA does not http://www.astronomy.com/asy/default.aspx?c=a&id=2249

58. Fraser Valley Astronomers Society A local astronomy site with comprehensive information about the local darksky park including directions; as well as videos on the problem, and information about its effects on health and astronomy. http://www.fvas.net/

Main Navigation Home What's New? FVAS Calendar About FVAS FVAS Gallery ... Contact Us Telescope Making SMALL PARTS Vic's Mirror Making Vic's Telescope Making Vic's Knife Edge Tester ... Resources for ATMs Weather Abbotsford Weather Satellite View Northwest Clear Sky Clocks BC Weather Centre ... Cloud Forecast for BC Telescope Stores Before You Buy Telescope Reviews Astro Mechanics BC Telescopes ... Vancouver Telescope Resorts for Astronomers Visiting Merritt B.C. Paradice Lake Resort Merritt B.C. Quilchena Ranch Merritt B.C. Seven Half Diamond Ranch Merritt B.C. Resorts, Lodges, Cabins, Campgrounds Thompson Nicola, British Columbia Light Pollution Outdoor Lights Selene NY Dark Sky Lighting Light Pollution - Big Picture ... AMA Links Light Pollution to Cancer Welcome! Take your time visiting the site. You will find all kinds of interesting pages here! Everything from Mirror making, to Telescope making, News events updated daily, links and Educational sites for Students and Teachers. Discussion Board FVAS members only.

59. ECANL Conference -- The Urban Wildlands Group Comprehensive information about a conference on ecological effects which took place in February 2002 including abstracts and references on the topic. http://www.urbanwildlands.org/conference.html

The Urban Wildlands Group The Urban Wildlands Group is dedicated to the conservation of species, habitats, and ecological processes in urban and urbanizing areas. Home People Links Contact Ecological Consequences of Artificial Night Lighting: Conference In 2002, Catherine Rich and Travis Longcore of The Urban Wildlands Group co-chaired the first North American conference on the ecological consequences of artificial night lighting. The conference was co-hosted by the UCLA Institute of the Environment and attracted a diverse group of presenters and attendees. Rich and Longcore are currently editing a book on the topic to be published by Island Press. Media reports from the conference are linked below, as are other resources on this emerging environmental issue. Resources Order Ecological Consequences of Artificial Night Lighting (Island Press), edited by Catherine Rich and Travis Longcore. "Ecological Light Pollution" in

60. Light Pollution Astronomers worldwide are concerned with the disappearing stars in the night sky due to increasing skyglow from uncontrolled urban uplight. http://www.assa.org.au/lightpollution/

Astronomical Society of South Australia www.assa.org.au The Society About Us Membership Activities Regional Branches ... Contacts Astronomy Sky Tonight Visual Observing Imaging Equipment ... Light Pollution Resources Event Calendar Image Gallery For Members Home Light Pollution Introduction The problem The solution Download brochure Adelaide's light pollution halo encroaching into the sky in this star-trail photograph taken 120km north of the city. Photo by Justin Tilbrook. Astronomers world-wide are concerned with the disappearing stars in the night sky due to increasing skyglow from uncontrolled urban uplight. Light pollution is stray light emitted from poorly designed and aimed lighting installations for advertising, business, security and street lighting. While some light is unavoidably reflected upward from illuminated surfaces, much of it spills outside the area that it is meant to illuminate creating glare light-trespass and skyglow This stray light and the energy generated to produce it is wasted. It unnecessarily contributes to greenhouse emissions, and wastes money. Also, this wasted light does not necessarily contribute to safety nor enhance amenity. Very often it creates a nuisance. We do need outdoor lighting at night but there are better alternatives that save energy and improve the quality of nighttime lighting that also help to reduce skyglow and preserve the night sky. Light pollution is much easier and cheaper to remedy than most other kinds of pollution!

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