Globe at Night 2013

GLOBE_at_night_logo_200The 2013 Globe at night event takes place this year from April 29th to May 8th. We’d encourage you to take part – their website has all the details! All you need to do is compare the sky that you see at your location with the charts on the website to get an estimate of your light pollution. Your reading will then be used to provide a global map of light pollution.

LED streetlamp aims to improve public’s view of stars

_67244300_lampsThe BBC reports that “Researchers believe they have come up with a new type of LED-powered streetlamp that could radically reduce light pollution.”

Potentially this work will allow streetlights to be accurately directed onto the area the light is required and have zero light spilling outside that area. The key will be convincing local government that it’s worthwhile investing in these technologies to save money in the longer term.

The full article is at http://www.bbc.co.uk/news/technology-22292129

Loosing the Dark public awareness video

Losing the Dark is a “public service announcement” planetarium show, a collaboration of Loch Ness Productions and the International Dark-Sky Association. It introduces and illustrates some of the issues regarding light pollution, and suggests three simple actions people can take to help mitigate it. The show gives planetarium professionals a tool to help educate the public about the problems of light pollution. Planetarians are uniquely positioned to teach audiences ways we can all work together to implement responsible use of lighting.

Red is the new black: how the colour of urban skyglow varies with cloud cover


The development of street lamps based on solid-state lighting technology is likely to introduce a major change in the colour of urban skyglow (one form of light pollution). We demonstrate the need for long-term monitoring of this trend by reviewing the influences it is likely to have on disparate fields. We describe a prototype detector which is able to monitor these changes, and could be produced at a cost low enough to allow extremely widespread use. Continue reading

The City Dark

Is darkness becoming extinct? When filmmaker Ian Cheney moves from rural Maine to New York City and discovers streets awash in light and skies devoid of stars, he embarks on a journey to America’s brightest and darkest corners, asking astronomers, cancer researchers and ecologists what is lost in the glare of city lights. Blending a humorous, searching narrative with poetic footage of the night sky, The City Dark provides a fascinating introduction to the science of the dark and an exploration of our relationship to the stars.

Continue reading

12th European Symposium for the Protection of the Night Sky

The Dark Sky Programme of the POLARIS – OPP Association and the Astronomical Institute of the Wroclaw University, would like to invite to the 12th European Symposium for the Protection of the Night Sky which will be held in Bielsko-Biała13th-15th of September 2012 at the ZIAD Bielsko-Biała S.A. during 25th International Power Industry Fair ENERGETAB 2012.

Dark Sky Parks and Dark Sky Reserves – A Comparison

[This is a crosspost from www.cademuir.eu ]

Over the past while I’ve noticed that some confusion has arisen about the distinctions between Dark Sky Parks and Dark Sky Reserves. In preparation for an upcoming meeting I drew up the following 2 pager explaining the key differences. For the impatient, here’s the 2 line difference from Steve Owens:

  • Parks are public land more or less empty of human habitation, and can be of any size.
  • Reserves are large areas centered round a significant dark sky area (the core), with a buffer zone that includes communities stretching a min of 15km on all sides of the core. Continue reading