21. Light Pollution Resources light pollution Resources. False color image of the eastern US as seen fromthe DMSP satellite. Yet the problem of light pollution is easily remedied. http://web.lemoyne.edu/~mcmahon/lp.html

22. Index Of IAU Commission 50 Working Group On Light Pollution Explains how the working group is helping to combat the problem at the moment and how anyone can help. Also includes various links and general information. http://www.ctio.noao.edu/light_pollution/iau50/

http://www.ctio.noao.edu/light_pollution/iau50/iau50-index.htm

23. Pennsylvania Outdoor Lighting Council (POLC) Information on the state's latest lighting situation with photos, links, guidance on how to help with glare, light trespass and skyglow caused by light pollution. Includes information on creating local ordinances, and contacts. http://home.epix.net/~ghonis/

Viewing this page requires a browser capable of displaying frames.

24. Light Pollution Or Not, That Is The Question Amateur Astronomers and Wildlife Associations worldwide regard the increasing lightpollution with increasing concern. light pollution; a review of the law. http://www.amtsgym-sdbg.dk/as/sky.htm

The Sky I hate - and the Sky I love.. Unfortunately, an undisturbed sky is no longer an experience possible for everybody. Amateur Astronomers and Wildlife Associations worldwide regard the increasing light pollution with increasing concern. Electric energy is wasted irrespective of world wide concern on CO2 pollution. Bad street illumination is clearly visible even from space satellites (click for a nightphoto of Europe) , and a new age of sky commercials has started. During the second world war, long range searchlights were applied to detect air-crafts attacking during night time. Today, modern versions of these searchlights are successfully applied by an increasing number of companies for advertising. Companies advertise with long range lasers, able to dominate the sky within a radius of 50 km. In the city of Sonderborg, Denmark, a local high tech company applied a computer controlled long range searchlight beam in short periods, without any public warning. As a result, the local newspaper gave strange eye witness reports: People claimed to have seen a real UFO!

25. IAS, Indiana Astronomical Society Home Page Information on the organization, events, light pollution, photo album and membership. http://www.iasindy.org

Introduction Membership Information Upcoming Events Light Pollution ... Members Only Welcome to the Indiana Astronomical Society Home Page This site is dedicated to the pursuit of astronomy for professionals, amateurs, avidskywatchers, or curious hobbyists. If you are new to our site, please read the technical notes page for better viewing. Last Modified - 06/07/2004

26. Light Pollution Yerkes Observatory and light pollution. light pollution Talks. Here arelinks to some of the presentations I have given on light pollution. http://astro.uchicago.edu/home/web/rhe/Astronomy/lightpollution.html

Yerkes Observatory and Light Pollution The night-time sky at Yerkes has become increasingly brighter over the last 15 years, due to light pollution. Measurements made in the spring of 1998 showed the sky brightness measured at a 70 degree elevation to be about twice what they were 10 years before. I had noticed that, between 1995 and 1998, the darkness had deteriorated to the extent that I no longer needed a torch (flashlight) to walk home after sunset. In August of 1998 I took a series of horizon pictures from the catwalk of the 40-inch refractor. These pictures were taken just after midnight on a moonless night, with an f/3.5 aperture and 2-minute exposures on ISO 200 film. The pictures below show (going from left to right) the views looking (i) South-West, (ii) South-East, (iii) East and (iv) North-West. Click on a thumbnail for a larger version. As can be seen, the sky is pretty bright. The most suprising thing was to find that the darkest part of the horizon is looking towards the South-East, which is the direction of Chicago! Clearly our light pollution problem is dominated by light from the local communities. In February of 1999 I approached the Williams Bay village board to see if I could give them a presentation on this problem. Williams Bay had a section in its building code on lighting, but it was very limited in its scope and was largely being ignored. In March I gave a presentation to the Village Board which received a favourable response. Over the spring and summer of 1999 I drafted a lighting ordinanace with their input, and this was adopted by Williams Bay in September of 1999.

27. AAS Committee On Light Pollution, Radio Interference And Space Debris Committee on light pollution, Radio Interference and Space Debris.Charge. Acts as a clearinghouse for information on these topics http://www.aas.org/~light/pollution.html

Committee on Light Pollution, Radio Interference and Space Debris Charge Acts as a clearinghouse for information on these topics and, whenever possible, helps those who are attempting to combat the problem. Members Organizations of Interest Bibliography Headlines ... Connect to AAS Home Page

28. Light Pollution WHAT IS IT? (140 Kb). The definition of light pollution. LIGHT FIXTURES (90 Kb) ADVANTAGES(10 Kb) Advantages and benefits of reduction light pollution. http://www.iac.es/proyect/otpc/pollu.htm

OFICINA TECNICA PARA LA PROTECCION DE LA CALIDAD DEL CIELO LIGHT POLLUTION In this page you can select the following subjects: WHAT IS IT? (140 Kb) The definition of light pollution. LIGHT FIXTURES (90 Kb) Several types of light fixtures, divided into fixtures that pollute the sky and fixtures that do not. BASIC CRITERIA (22 Kb) Grafic basic criteria in light fixtures. SPOTLIGHTS (30 Kb) The use of symmetric and asymmetric spotlight. LIGHT BULBS (35 Kb) Several types of light bulbs. ADAPTATIONS (200 Kb) Some adaptation in La Palma Island. ADVANTAGES (10 Kb) Advantages and benefits of reduction light pollution. If you wish to go back to previous menu push here. Last Updated: Lunes 9 de abril de 2001

29. CNN - Light Pollution Threatens National Parks - March 29, 1999 CNN http://www.cnn.com/NATURE/9903/29/light.pollution.enn/index.html

MAIN PAGE WORLD ASIANOW U.S. ... news quiz CNN WEB SITES: TIME INC. SITES: Go To ... Time.com People Money Fortune EW MORE SERVICES: video on demand video archive audio on demand news email services ... pagenet DISCUSSION: message boards chat feedback SITE GUIDES: help contents search FASTER ACCESS: europe japan WEB SERVICES: Light pollution threatens national parks Light pollution, which is most often caused by excessive or misdirected outdoor lighting, hinders the ability to observe celestial features March 29, 1999 Web posted at: 4:15 PM EST The splendor of camping out and star gazing is a threatened pastime, according a survey of light pollution impacts on the U.S. National Park System conducted by the National Parks and Conservation Association. "Protecting dark night skies in our National Parks is as vital as protecting clean air, water, wildlife and the sounds of nature," said Thomas Kiernan, president of the conservation organization. "Star gazing is a connection to humanity's earliest curiosity about our place in the universe. It is practically impossible to see the stars from most cities, but now, clear night vistas in our national parks are an important resource that is literally fading from sight." According to the survey: Nearly two-thirds 64 percent of parks responding to the survey that permit overnight visitation consider light pollution a resource problem.

30. Light Pollution Skyglow / light pollution. JPEG, GIF, TIFF. Experimental image modelinglight pollution in the continental United States. This http://laps.fsl.noaa.gov/albers/slides/ast/places.html

31. CNN.com - A Starry Night Fuels Debate Over Light Pollution In Arizona - August 2 CNN http://www.cnn.com/2000/US/08/24/dimming.the.lights.ap/index.html

U.S. News Editions myCNN Video ... Feedback CNN Sites CNN CNN Europe CNNfn CNNSI myCNN CNNfyi AllPolitics Languages Search CNN.com CNNSI.com CNNfn.com The Web U.S. TOP STORIES California braced for weekend of power scrounging Court order averts strike against Union Pacific railroad U.S. warning at Davos forum Two more Texas fugitives will contest extradition ... MORE TOP STORIES Thousands dead in India; quake toll rapidly rising Davos protesters confront police California readies for weekend of power scrounging Capriati upsets Hingis to win Australian Open ... MORE MARKETS 4:30pm ET, 4/16 DJIA NAS SPORTS Jordan says farewell for the third time ... LOCAL EDITIONS: CNN.com Europe change default edition MULTIMEDIA: video video archive audio multimedia showcase ... more services E-MAIL: Subscribe to one of our news e-mail lists Enter your address: DISCUSSION: chat feedback CNN WEB SITES: CNNfyi.com CNN.com Europe AsiaNow Spanish ... Korean Headlines TIME INC. SITES: Go To ... Time.com People Money Fortune EW CNN NETWORKS: CNN anchors transcripts Turner distribution SITE INFO: help contents search ad info ... jobs WEB SERVICES: A starry night fuels debate over light pollution in Arizona larger NOAA image of light pollution in the United States, as seen from space

32. SOUTH JERSEY ASTRONOMY CLUB Information on skywatches, light pollution, events, membership. http://hometown.aol.com/sjastroc/index.html

Main Regional htmlAdWH('7002737', '234', '60'); The S OUTH J ERSEY A STRONOMY C LUB Ray Maher, President Box 120, South St., Port Elizabeth, N.J. 08348 W elcome to the website for the South Jersey Astronomy Club. SJAC serves those with an interest in astronomy throughout the area, including Cape May, Salem, Gloucester, Cumberland and Atlantic Counties. Here, you can learn more about club activities, including meetings and our sky watch sessions. Browse the gallery of photographs taken by some of our members, or you can link to other astronomy websites, or learn a few tips on deep sky observing. We also host the annual South Jersey Star Party, a regional weekend gathering for astronomy enthusiasts Y ou can also easily join the South Jersey Astronomy Club W hether you're a first-time visitor to the club website or an SJAC member, be sure to check out the ASTRO ALERT! page for the latest news on club meetings, SkyWatches and other activities. Our WHAT'S NEW page will advise you about new additions to our website. Thanks for visiting! E-mail S.J.A.C.

33. The Universe In The Classroom #44 - Light Pollution, Pg. 2 light pollution, Page 2. Villains and Heroes of Lights and LightingFixtures If we are to reduce the effects of light pollution, we http://www.aspsky.org/education/tnl/44/lightpoll2.html

Light Pollution, Page 2 Villains and Heroes of Lights and Lighting Fixtures If we are to reduce the effects of light pollution, we must learn about the types, both good and bad, of fixtures used in outdoor lighting. Some of these are heroes: They save energy, direct light to where it is needed, and add to the ambiance of our nighttime environment. Others are villains that waste energy, spill light in all directions, produce glare, and ruin the beauty of the night. the Villains Globes and similar fixtures. These usually consist of a transparent or translucent "ball" or cylinder with a lamp bulb inside, sitting atop a pole. They look attractive in the daytime when they are not turned on. In fact, this type of fixture is often chosen for this very reason. These lights are villains because when turned on at night, they radiate not only in the direction where illumination is needed, but in all directions - more than half the light is directed upward to add to the sky glow and sideways to cause glare. Much of the rest is not doing any useful work in helping us see the things we need. Tripping the light (not-so) fantastic. View of Los Angeles, CA in 1908 (top) and 1988 (bottom).

34. Pa. Dept. Of Conservation And Natural Resources A state campground near Susquehannock State Forest with rustic campsites and a 360 degree view of the sky with no light pollution for stargazing. Site includes information about local history and attractions. http://www.dcnr.state.pa.us/stateparks/parks/cherrysprings.asp

State Parks State Forests Greenways Trails ... Councils We now have a new look. Please update your bookmarks. If you prefer, please change the extension of your bookmarked page (.htm, .html or .asp) to .aspx. OR Proceed to the new DCNR Home Contact FAQ

35. The Fading Milky Way light pollution is a growing environmental problem that threatens to erase thenight sky before its time. Fortunately, light pollution is reversible. http://science.nasa.gov/headlines/y2001/ast01nov_1.htm

The Fading Milky Way Light pollution is a growing environmental problem that threatens to erase the night sky before its time. Listen to this story via streaming audio , a downloadable file , or get help November 1, 2001: Cosmologists speculate that 10 years from now (a mind-boggling stretch) the stars in our relentlessly expanding Universe could run out of fuel and fade from view. The night sky, once the TV set of ancient peoples, will become dull and boring: a blank tableau with no stars or nebulae. Sounds like an astronomer's nightmare! Fortunately, the stars themselves won't go out for a very long time. But researchers say the night sky is already fading. A recent study revealed that perhaps two-thirds of the world's population can no longer look upwards at night and see the Milky Way a hazy swath of stars that on warm summer nights spans the sky from horizon to horizon. Above : The Milky Way shines through aurora borealis during a recent geomagnetic storm . Both are rare sights from brightly-lit urban areas. Photo credit: Duane Clausen, Menominee, Michigan, USA.

36. Cosmic Light Pollution Go to Science@NASA home page Science@NASA home, Cosmic light pollution. Notall sky glow is caused by urban light pollution, however. http://science.nasa.gov/headlines/y2000/ast10jul_1.htm

Science@NASA home Cosmic Light Pollution A series of unmanned balloon flights will measure the subtle ultraviolet glow of the night sky and help unravel one of the most perplexing mysteries of astrophysics. July 10, 2000 A midnight balloon ride high above the farms and fields of the American West to view the gentle glow of the Earth at night may sound rather romantic. The ride from Palestine, Texas on July 6, 2000, however, was pure science, the first of a series of unmanned NASA scientific balloon flights that will measure the ultraviolet (UV) light illuminating the night sky and that may ultimately help solve the mystery of high-energy cosmic rays, which seem to travel through space further than physicists deem possible. The balloon carried an experiment called NIGHTGLOW , a collaboration between NASA's Goddard Space Flight Center (Greenbelt, MD.) and the University of Utah, Salt Lake City. NIGHTGLOW is designed to detect background radiation produced by a variety of sources, including moonlight and starlight, the interaction of oxygen and nitrogen molecules in the atmosphere, human-made lighting, and even the bioluminescence of squid and other animals. Sign up for EXPRESS SCIENCE NEWS delivery Above : The NIGHTGLOW balloon is pictured just after launch (left) beside a diagram showing the trajectory of the July 6th test flight (right).

37. Light Pollution Petition To Home Page Fight light pollution. The only way to stop and reversethe impact of light pollution is government legislation. in http://www.robertvincent.freeserve.co.uk/lightpollution.html

To Home Page Fight light pollution The only way to stop and reverse the impact of light pollution is government legislation. in order for this to happen it is vital that every person in the uk with an interest in the night sky, and energy conservation, should follow the steps listed below and send a standard E mail message to your MP, it will only take about 2 minutes of your time and will make a big difference. 1 Copy the standard letter. 2. Find out who your MP is at www.locata.co.uk/commons/. 3 Click on your MPs E mail address, fill in the form field and paste the standard letter into the main body, or write your own message. 4. Send the message. 5. Job done! 5 The type of encouraging letter you can expect to receive. For more information on light pollution please visit the campaign for dark skies web page. www.dark-skies.org To Home Page Please feel free to copy this web page and incorperate it into your own web site,or place a link to this one. Best wishes J.Vincent.

38. Light Pollution- The Problem If the night is cloudy, the light pollution effects are striking.The companies. So Next How Much Does light pollution Costs? http://www.pha.jhu.edu/~atolea/second/page1.html

Looking from the above One needs to be an astronaut to enjoy a view like one on the left, Florida from the Space Shuttle. However, most of us have contemplated similar views during airplane takeoffs or landings. The view is fantastic, thousands of city lights shining like starts on the ground, outlining the roads and neighborhoods. But one has to go a little bit further than that and think. Should you see those lights at all? Is there any use of the light that you see, light that obviously goes up, other than illuminating bird and airplane bellies? Light stands for Lighting We all know why we have light outside. Outdoor lighting is used to illuminate roadways, parking lots, yards, sidewalks, public meeting areas, signs, work sites, and buildings. It provides us with better visibility and a sense of security. People sleep better when their property is properly lighted, when their car outside is clearly visible through the window. However, light alone does not provide security, but a sense of security. Unless your up all night, nothing guards you better than a dog, a fence/door/window security system or police patrols in your neighborhood. When well designed and properly installed, outdoor lighting can be and is very useful in improving visibility and safety and a sense of security, while at the same time minimizing energy use and operating costs.

39. Light Pollution Programme, Greece The website of the Greek educational program on the issue. Extensive information on how the problem is being solved in Greece by an awareness program in schools. http://www.eplioan.gr/LP/lp.htm

40. RASC LPAP RASC light pollution Abatement Program. TABLE OF CONTENTS. LPAP Program,Mission, Other Organisations. LPAC Committee, What we do, Definitions. http://www.rasc.ca/light/home.html

RASC Light Pollution Abatement Program TABLE OF CONTENTS LPAP Program Mission Other Organisations LPAC Committee ... Reports to Council

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