Jax wrote:
then I tried , "no lights above horizontal and keep it on your property".

That's a very good approach.

I'll add not to worry about the type of bulb; just concentrate on being
sure the lights are shielded (at the *very least* above the horizontal).
Say little about astronomy. Concentrate on glare reduction instead.
Light entering a person's eye directly from the fixture is glare. Glare
reduction via shielding makes things *more* visible at night, improving
safety and making the lighting more effective. Glare is of particular
concern to the elderly; their vision is often much more sensitive to
it's negative effects. Ask them why they put shades on their indoor
lamps... Reducing glare makes it more pleasant to be outside at night
(you can see better and there is no need to shield your eyes), improving
everyone's quality of life. Lastly, proper shielding directs the light
that would otherwise light up the sky or enter the eye of a passing
motorist to the place intended, making the street light much more
effective. The resulting ability to use lower wattage bulbs or wider
spacing of the lights will result in real savings to the community.

Clear skies,
Greg

--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)

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