21. Atlas Of World Light Pollution A comprehensive atlas of satellite images and artificially created maps of different light pollution measurements covering the globe. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

22. CNN.com - Light Pollution Clouds HK's Night Sky - March 13, 2002 CNN http://cnn.com/2002/TECH/science/03/13/hk.light/index.html

MAIN PAGE WORLD U.S. WEATHER ... ABOUT US/HELP CNN TV what's on show transcripts CNN Headline News CNN International ... askCNN EDITIONS CNN.com Asia CNN.com Europe CNNenEspanol.com CNNArabic.com ... set your edition Languages Spanish Portuguese German Italian Korean Arabic Japanese Time, Inc. Time.com People Fortune EW InStyle Business 2.0 Light pollution clouds HK's night sky Hong Kong's dramatic skyline has made the city blind to the wonders of the universe From Andrew Brown CNN Hong Kong (CNN) "Once upon a time there was a beautiful princess, Zhinu, who was a weaver with goddess-like powers. Zhinu met Nuilang, a herdsman and they fell madly in love. So happy were they together, that Zhinu began to neglect her work. As a punishment, the gods placed the princess on one side of the sky, and her lover on the other between them lay a river of stars they could not cross." So goes a version of 'The Princess and The Herdsman', a Chinese fairy tale based on two stars on opposite sides of Tian He the Milky Way. The two stars are actually Vega (the princess) and Altair, while Tian He translates to 'the Heavenly River'. But in Hong Kong, astronomers wishing to observe the celestial bodies must travel to a remote village at the dead of night. Some are even forced to rent top-floor apartments in Hong Kong's New Territories to gaze at the stars.

23. New England Light Pollution Advisory Group Everything to do with the problem in New England. Lots of links. Includes information on how to subscribe to the NELPAG forum. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

24. New England Light Pollution Advisory Group (NELPAG) National and international news on lightpollution issues is available at the IDA light pollution in Spain USA Website, in English and Spanish. http://cfa-www.harvard.edu/~graff/nelpag.html

The New England Light Pollution Advisory Group The New England Light Pollution Advisory Group (NELPAG) A big role of NELPAG has been providing information through this Website since early 1995, with hundreds of accesses to this page being logged every week for the past couple of years (as of August 1997, we counted more than 47,000 accesses to this page; our best week so far was the one ending 1997 May 4, when 766 accesses to this page were recorded in that week alone). [As of August 1999, we are still getting 400-600 accesses per week, with over 100,000 estimated accesses to these NELPAG web pages since 1995.] We have found that there is a great public demand for information on outdoor-lighting issues, and that there has been unfortunately a great dearth of sources that the interested individual can seek out. It should not be surprising, then, that we have received high praise from many people around the world for the information provided here. Imagine children growing up without being allowed to see trees or birds (or any other aspect of nature): now, how is this any different from preventing our children from seeing the stars?! But by our thoughtless erection of outdoor lights everywhere - without consideration of glare and light trespass, without consideration of safety, without consideration of the right to privacy, and without consideration of the energy waste and the waste of taxpayer dollars - we are making it so that a very small percentage of children are able to grow up in the world today with the ability to see and ponder the wonders of our beautiful starry night sky. Indeed, after a full century now of outdoor electrical lighting, one must wonder what a lot of the lighting manufacturers and installers were

25. The Anti-Light Pollution Section Of The Astronomical Society Of A webpage explaining the history and objectives of the organisation, and how to become a member. http://as.dsri.dk/sect/light.html

The Anti-lightpollution Section History: The Astronomical Societys Anti-lightpollution Section (AS-ALS) was established in 1992, but lightpollution has been discussed by professional and amateur astronomers at least since the beginning of the 1980'ties, primarily in the USA. Goal: The section contributes to the fight against lightpollution in Denmark with the purpose to secure everyones possibility to enjoy and study the night sky. The objectives of the section are: To gather members interested in lightpollution. To gather and distribute knowledge about lightpollution, its causes, extent and possible countermeasures. To initialize and participate in a debate about lightpollution. Offer advice to the solution of problems caused by lightpollution. Activities: The section has published a number of papers on the subject of lightpollution, which all members joining the section will recieve and the section also publishes a newsletter which is sent to all members of the section. The members furthermore recieve invitations to talks arranged by the section alone or in coorporation with others and the section also produces information-sheets, booklets, folders, poster-exhibitions and T-shirts which can be ordered/bought/rented or lended. The section also compiles a library, a slide collection and a database containing addresses of companies, organisations and authorities relevant for the work of the section. Level of Activity: From the work of the section in 1993 the following activities can be mentioned: One member has distributed a folder about lightpollution at a public observatory. Another member has translated and adapted information-sheets from English to Danish. A third member has arranged a meeting, where an invited speaker gave a talk including a slide-show about lightpollution. A fourth member took advantage of the expected meteor-shower in august and obtained some media-coverage with a suggestion about turning of the street-lights in Copenhagen. A member has been in contact with representatives for an electricity company and with mayors and technical staff from some communities. A member has participated in a nordic outdoor lighting cogress with a poster-exhibition and distribution of different folders. Generally the level of activity is 100% dependant on the effort made by the individual members.

26. New England Light Pollution Advisory Group (NELPAG) The New England light pollution Advisory Group http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

27. Mrak Projekt Svjetlosno zagađenje (light pollution) naruà ¡ava ekosustav istrebljujući brojne noćno aktivne à ¾ivotinjske vrste te ima posljedice na ljudsko zdravlje. http://mrakprojekt.org

28. IESNA - The Lighting Authority The IESNA is a large organization for the lighting industry in the USA, Canada and Mexico. Links to regional section sites. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

29. 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

30. Campaign For Dark Skies (CfDS) A comprehensive website explaining what the problem is and how it can be tackled in the UK. CfDS is the UK's largest antilight-pollution campaign http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

31. State Commission Reports On Light Pollution. The causes of light pollution are many and the effects can be glare, energy waste, The state also should offer light pollution training and education http://www.monmouth.com/~ksears/litepol2.htm

State Commission Reports on Light Pollution Eatontown Environmental Commission member John Batinsey, who chaired the Light Pollution Study Commission, suggests contacting the Governor's office or your legislators to encourage action on the recommendations in the report. He says that this year the NJ DOT revised its roadway lighting policy and is now maximizing the use of cutoff luminaires to improve the quality of lighting. The New Jersey Highway Authority is presently installing only cutoff lighting as new installations and replacements on the Garden State Parkway. The New Jersey Turnpike Authority continues to maintain its policy of using cutoff or equivalent luminaires. In 1993, the state legislature established the New Jersey Light Pollution Study Commission to consider the problem of light pollution, the potential for monetary savings and other benefits from reducing light pollution, and the recommended steps to address this issue. The first meeting of the Commission was held March 1995 and in April 1996 it submitted its report to the Governor and legislature. The report's introduction states: The causes of light pollution are many and the effects can be glare, energy waste, light trespass (nuisance light) and sky glow. Most glare can and should be prevented. Glare affects the ability of drivers to perceive objects or obstructions clearly. Particularly sensitive to this problem are elderly drivers.

32. Minnesota Astronomical Society's Onan Observatory A lightpollution map of Minnesota, a news story about local light pollution and information about what can be done locally. http://www.mnastro.org/onan/lpintro.htm

Explore Your Universe... Join the MAS MAS Home Page Onan Observatory Astronomy Day ... Visitor Information Light Pollution About the Observatory History OnanNews Email KSTP Article ... 9/27/04 Release Quick Links About the MAS Join the MAS Contact the MAS Events Calendar Webmaster E-mail Last Updated: April 07, 2005 Onan Observatory Light Pollution 101 Metro-area light pollution map, assembled by MAS member Craig Cotner, shows the extent of the problem. Pink areas are heavily light-polluted with incrementally less pollution indicated by yellow, green and purple. Note the encroachment of the Twin Cities' light pollution on the area around the Onan Observatory. What is light pollution? An unfortunate side affect of growth and development is increased levels of "light pollution" light which doesn't serve its intended purpose of providing safety and convenience. Instead, it spills outward and upward from poorly designed or inefficient light fixtures, trespassing on surrounding properties and polluting the skies. "Light pollution" includes:

33. Meteor Shower To Begin In Hours Any light pollution or moonlight considerably reduces the count. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

34. Light Pollution Experimental image modeling light pollution in the continental United States. A value for the natural sky glow is added onto the light pollution http://laps.fsl.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.

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

CURRENT MOON lunar phases YOUR NEW WINDOW TO THE UNIVERSE! This site is dedicated to the pursuit of astronomy for professionals, amateurs, avid skywatchers, or curious hobbyists. Photos taken by IAS members. You are visitor number: Home Introduction Guest Speaker Upcoming Events ... Contact Us

36. 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.

37. Astronomical Society Of Victoria - Home Includes activities, events, light pollution issues, images, past articles, and library. http://www.asv.org.au/

Search Enter Keywords: Friday, 23 September 2005 Home News Links Contact Us The Society Home About the ASV Membership News ... Search Resources Upcoming Events ASV Library Members Area ASV Classifieds ... Web Links Astronomy Photo Gallery Night Sky This Month Daily Space News Light Pollution ... NASA Space Place Login Form Username Password Remember me Forgotten your password? Sun Today CURRENT SUN full size Popular Leon Mow Biography 2005 VicSouth Desert Spring Star Party Leon Mow Dark Sky Site (LMDSS) Coordinator Astrophotography Home Newsflash Crux Survey Online As part of our ongoing process to ensure you get the most out of your ASV membership we would like to get your feedback regarding the Bi Monthly Crux Publication. All ASV members are requested to participate in the online Crux Survey which can be found under the Members area menu after logging in. The survey will only take 2 minutes to fill in and is your mechanism for letting us know what you like, what you dislike and what else you would like to see. Website Tips Did you know you can see what new photos have been added by our members by clicking on the Photo Gallery menu, scrolling to the bottom of the page and choosing

38. IDA Utah This light pollution wastes energy and provides no benefit to society. light pollution in The United States An overview of the inadequacies of the http://www.utahskies.org/lightpollution/

The Utah Section of The International Dark-Sky Association We are losing our heritage of starry nights. Artificial light in the night sky threatens to destroy the spectacular views the heavens offer. This "light pollution" wastes energy and provides no benefit to society. Light Pollution is misused or misdirected light: Sky Glow .............is light wastefully escaping into the night sky and causing a glow over urban/suburban areas Glare ....................is light shining dangerously out into peoples eyes as they walk or drive by. Light Trespass .....is unwanted light shining onto a neighbors property or into their house. Light Pollution wastes billions of dollars annually in the United States wastes incredible amounts of valuable natural resources pollutes the air we breath through needless generation of electricity (most of which comes from fossil fuels) harms nocturnal wildlife harms humankind, being linked to some serious ailments destroys the views of the heavens that man has enjoyed since the beginning of time.

39. Southeast Michigan Light Pollution Issues Southeast Michigan light pollution Issues light pollution issues involving the Peach Mountain Observatory located near Dexter Michigan. http://www.umich.edu/~lowbrows/light/dexter-issues.html

Southeast Michigan Light Pollution Issues by Dave Snyder Updated: August 2001 Southeast Michigan Light Pollution Issues Lighting from buildings, streetlights and so on create light pollution which makes it difficult to view the night sky. This page discusses light pollution issues affecting Dexter Township (located in Southeast Michigan) and other communities in Southeast Michigan. More information about Light Pollution. Existing Light Pollution Ordinances Many communities have created ordinances to control lighting in response to increased public awareness of light pollution. Not only does this reduce light pollution, it reduces costs and is better for the environment. The following is a list of existing light pollution ordinances from communities in Southeast Michigan. Brighton Township Light Pollution Ordinance. Scio Township Light Pollution Ordinance. Livonia Light Pollution Ordinance. Proposed Light Pollution Ordinances Lake Hudson Dark Sky Preserve This part is repealed on June 10, 2003. So the Dark Sky Preserve will no longer be protected after 2003. There are two bills in the Michigan congress to extend the law. First, Senate Bill 430 was introduced April 26, 2001 by Senator Hammerstrom and referred to the Committee on Natural Resources and Environmental Affairs. If the bill passes, section 75106 would be amended to read:

40. ASSA Pretoria Centre - Home Page Activities, calendar, ads, astrophotography, light pollution project, and links. http://www.pretoria-astronomy.co.za/

Pretoria Centre of the Astronomical Society of Southern Africa Home Introduction The Committee Centre Activities ... Live WeatherCam WeatherCam View near-live images of weather conditions in Pretoria and other locations in South Africa. Click here for more... Did you receive an e-mail saying that Mars will be "bigger than the Full Moon"?! By Claire Flanagan, Johannesburg Planetarium No it won't - the e-mail that reports this is a badly-written article about the Mars closest-approach of 2003. Click here for more... Lunar parallax project By Dr Barbara Cunow Have you ever wondered what you would experience if you could observe the Moon from different continents at the same time? Well, one of the things you would see is that the position of the Moon, relative to the background stars, is not the same everywhere, but depends on where you are on the Earth's surface. Click here for more...

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 2     21-40 of 171    Back | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | Next 20