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Light Pollution #13221 08/28/02 07:33 AM
Joined: Oct 2000
Posts: 5,389
sparky Offline OP
Ever been confronted with the term?

Apparently I'm a league with a trade of 'light polluters'....

(do these nay sayers own candle stocks?)

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Re: Light Pollution #13222 08/28/02 09:58 AM
Joined: Aug 2002
Posts: 35
strangedog Offline
The term was origionally used in astronomy as a refrence to scattered light from streetlights and such that affected their readings. Apparently the continential US is a bad place for visible light astronomy due to light pollution. The problem is a that "light pollution" sounds catchy. Now if a neighbors secruity light spills wrong it is light pollution. Solutions for light pollution involve better focus(down) On street and exterior security lights.


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Re: Light Pollution #13223 08/28/02 09:58 AM
Joined: Nov 2000
Posts: 2,148
resqcapt19 Offline
A term used for light that is spilled away from the area intended to be lit. Usually applied to light that goes up into the sky. This makes it more difficult to view the stars and other night time sky objects. It becomes a very big deal if there is any type of observatory in the area. Areas with observatories may have local rules limiting the type of light fixtures that can be used.

Re: Light Pollution #13224 08/28/02 10:01 AM
Joined: Nov 2000
Posts: 2,148
resqcapt19 Offline
sorry for double post

[This message has been edited by resqcapt19 (edited 08-28-2002).]

Re: Light Pollution #13225 08/28/02 10:21 AM
Joined: May 2002
Posts: 1,716
Roger Offline
Another issue, is along coastal areas and sea animals, specifically Turtles


Re: Light Pollution #13226 08/28/02 01:37 PM
Joined: Jul 2002
Posts: 680
walrus Offline
We retrofitted a gasoline canopy in a town on Mount Desert Island, Maine near Acadia Nat'l Park. This Island is the summer playhouse for the rich and famous(Martha Stewart, David Rockefeller and 100s of others). The original lights were 400w metal halide and the new ones were 320w metal halides with a special reflector( less amperage and more lumens). Several folks in the area freaked and complained to planning board. They made the oil company install barriers on one side to keep light from reflecting down the hill toward the water. Might as well of left the original lights [Linked Image]

Re: Light Pollution #13227 08/28/02 02:48 PM
Joined: Apr 2002
Posts: 7,237
HotLine1 Offline
Sparky, et al
We had a situation at a outdoor tennis club.
Installed the new fixtures (1k MH, per plans.
The tennis players loved it.
The neighbors (2) had a "problem".
We re-aimed the fixtures, (twice at night)installed deep baffles, & crossed our fingers.
Twp Building Insp & zoning officer all cried "light pollution".
After a few nights at the site with a light meter, the Building & Zoning guys, and the neighbors, all was/is well.

Re: Light Pollution #13228 08/28/02 04:34 PM
Joined: Aug 2001
Posts: 7,520
pauluk Offline
Our British contingent will know the name Patrick Moore, probably the U.K.'s best known astonomer who has hosted "The Sky at Night" on BBC TV for over 40 years.

He regularly comments about the problem of light pollution when stargazing, perhaps not surprising as he lives on the south coast where our population density is very high.

Many people in this country are now installing PIR-switched 500W halogen floodlights for security. I know that in many towns there are frequent complaints from neighbors about the strong light sources causing "light pollution," particularly if the light happens to shine on a bedroom window.

Re: Light Pollution #13229 08/28/02 06:07 PM
Joined: Aug 2002
Posts: 1,081
ThinkGood Offline
Light pollution--not to be confused with heavy pollution.

I couldn't resist [Linked Image]

Re: Light Pollution #13230 08/28/02 06:11 PM
Joined: Oct 2000
Posts: 5,389
sparky Offline OP
ah! stargazers!

We have the members of a star gazing group called stellafane that decend on us from all over at an annual convention here.

They are proximal to a new prison being built, and have raised quite the discontent to it's illumination....

Members of Stellafane, whose proper name is Springfield Telescope Makers, had worried that lights from the new state prison in Springfield would fill the night sky, blinding them to the stars above. But an agreement between Stellafane and state officials has satisfied the astronomers that the state will take needed steps to minimize the light pollution caused by the prison.

[This message has been edited by sparky (edited 08-28-2002).]

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