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Evening: M'illumino less

This sounds like a beautiful photos, but soon discover that behind a sad story.

Every (or almost) when we hear the word "pollution" comes from thinking about something too much, in excess, it is the same for light, just light pollution, the most feared by amateurs.
Light pollution is an alteration of the normal amount of light in the night caused by the light of our roads and city.The light refracted in the atmosphere, makes it undetectable by the faint light from very bright as the bodies stelle.Solo Sirius and brightest planets (Venus, Mars, Jupiter) are able to defeat the phenomenon, but they are also very observable. Here are some
illustrations in an elementary way to understand the phenomenon:

Today, thanks to the development of new technologies and modern observations, this problem has become almost nil, but we always try to avoid places near towns.
The situation in most of the city is really tragic

Who is responsible?

is precisely these types of lamps the main culprits, and their poor design forces the light to go on the road and 20% to '80% in air, preventing everyone to enjoy a wonderful starry sky.
to blame for their round shape, light is projected at 360 degrees, but most are out of their main target, illuminate the streets.

solutions exist to address?
The solutions are simpler and cheaper than you may think, we start with the assumption that the bad design of the lamps is almost always the case, in fact, with these "errors" of facts about you have a great dispersion of light. Then how to fix it? Easy, just redesign plafoniere.Questo video explains very simply how you can do:


In many (but not quite) city of Italy is going to 'installation of street lights that reduce to zero the dispersion of light and thus energy savings.
These innovations would be the dream of every amateur astronomer, it satisfied both parties, there is more light, but it does not bother to comments.

There are maps that show where there is more light pollution in Italy:

The blue points are the areas most suitable for observation (remember that even if there is the slightest amount of light the dark adaptation is not possible), the yellow zones are those made worse.
Remember that in your small, even if you're only one person can do much, much, no I'll never forget!




Sources: http://www.pd.astro.it/eventi/light-pollution.html
http://fareambientelazio.wordpress.com/ 2009/09/02/in-aumento-linquinamento-luminoso-nelle-citta /
http://it.wikipedia.org/wiki/Inquinamento_luminoso
http://www.panoramio.com/photo/11371320
http://maury.it
http://spacejoe .wordpress.com/2009/10/13/linquinamento-luminoso /

For more details:
http://spacejoe.wordpress.com/2009/10/13/linquinamento-luminoso/
http : / / it.wikipedia.org / wiki / Inquinamento_luminoso
http://www.astrocaat.it/IL/inq_luminoso.shtml