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[DSLF] Digest Number 861
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There are 7 messages in this issue.
Topics in this digest:
1. Re: Re: Goffstown, NH Outdoor lighting proposed ordinace
From: "James Benya" <jbenya@benyalighting...>
2. Re: While you were chatting!
From: Steve Davis <w2sgd@juno...>
3. RE: Lighting signs from above
From: "Fitzpatrick, Eric (J.)" <efitzpat@visteon...>
4. Shielded Lights
From: Adam Shiffman <adam_shiffman@yahoo...>
5. Re: Shielded Lights
From: Barry Johnson <johnsonb52@comcast...>
6. Re: Shielded Lights
From: "ctstarwchr" <ctstarwchr@aol...>
7. Sunset magazine article
From: "laverne booth" <ljbooth@thevine...>
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Message: 1
Date: Wed, 4 Dec 2002 07:35:13 -0800
From: "James Benya" <jbenya@benyalighting...>
Subject: Re: Re: Goffstown, NH Outdoor lighting proposed ordinace
Gentlemen, there are literally hundreds of fixtures that provide the quality
of light you describe, albeit rare and often not off the shelf. I agree,
there is no reason for 90 degrees to be sacred other than simple logic.
Actually, lighting systems that cut off at 72 degrees will behave really
well with the Kennebunkport setback.
James R. Benya, PE, FIES, IALD, LC
Benya Lighting Design
1880 Willamette Falls Drive
Suite 220
West Linn, OR 97068
(503) 657-9157 cell (503) 519-9631
Fax (503) 657-9153
----- Original Message -----
From: "Steve Davis" <w2sgd@juno...>
To: <DarkSky-list@yahoogroups...>
Sent: Tuesday, December 03, 2002 9:02 AM
Subject: [DSLF] Re: Goffstown, NH Outdoor lighting proposed ordinace
> ctstarwchr@aol... wrote:
>
> > > FYI, one town in NY has a 60 deg cutoff. Beat that! More poles? Not
> > > any more than all the #@*! unshielded acorns and probably a lot less.
>
> > Sounds interesting. Do you have a manufacturer and a model for this
> "60
> > degree cutoff" area luminaire?
>
> No, and I can't remember which town other than western NY and
> a long drive from here. Somebody must have been hopping mad.
>
> Remember "45 deg Johnny"? That is the crossover point where the
> vertical illumination exceeds the horizontal illumination. Also,
> nonlinear. Dobson was on the right track. :-)
>
> There is another fixture I have to find out about. Absolutely
> the best for driveways and parking lots. Louvered HPS -- used at
> a local nursing home for the past 40 years and still available.
> Better than the FCO shoebox and solves what Jan Hollan was
> referring to regarding LP from a distance. At one point, the
> British were pushing 85 deg cutoff. What's sacred about 90 deg
> other than supply side economics and people who think too many
> poles are required which has proven to be not true. -sd
>
>
>
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Message: 2
Date: Wed, 4 Dec 2002 10:23:06 -0500
From: Steve Davis <w2sgd@juno...>
Subject: Re: While you were chatting!
Brad_Bergstrom wrote:
> Come on down to "South" Georgia and try that sometime, Bub.
> We'll shrink that swelled head of yours down to size in no time!
BC has built up a bigger head of steam to move the mountains.
Give it more time and effort. It might be more difficult to
drain the swamp with all the gators and big yachts [vested
interests] down there. -sd
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Message: 3
Date: Wed, 4 Dec 2002 11:02:07 -0500
From: "Fitzpatrick, Eric (J.)" <efitzpat@visteon...>
Subject: RE: Lighting signs from above
GET YOURSELF A SIGN MADE WITH REFLECTIVE MATERIALS. As I have stated
before, roadway signage in Michigan is not illuminated, as the signs are
made with reflective materials. Visibility is not a problem even in
inclement weather. I have found that maximum visibility is obtained with
black letters on a white background. These signs can be too bright with
cars that have their headlights aimed to high (I have experienced this and
its annoying). Signage with reflective materials shows up quite well with
just parking lights with dark surroundings also. You can get the results
you want without lighting if you install a sign with proper reflective
materials. There is no need to light it to obtain the results you want.
---------------------------
Date: Mon, 2 Dec 2002 09:20:10 -0500
From: "Michael Stephan" <mstephan@kconline...>
Subject: Lighting signs from above
Hello all,
Some of you may be familiar that I am a Director of a wildlife/nature
property here in Indiana that has been designated as the first dark sky
preserve in Indiana.
While I have never had any interest in lighting our signage at the end
of our ½ mile access lane, it has become apparent that many are unable
to find our driveway after dark when we are having observing secessions,
etc.
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Message: 4
Date: Wed, 4 Dec 2002 10:50:53 -0800 (PST)
From: Adam Shiffman <adam_shiffman@yahoo...>
Subject: Shielded Lights
Hi All,
First off, thanks for all the replies on my question
about shielded lighting.
The area I want to illuminate is a 20 foot wide
section under the house we rent, with the primary
location being a gate and steps located by the street.
I looked at the Glarebuster. Unfortunately, it won't
really suffice to illuminate the the entire area. The
shielded Heath Zenith unit (SL-5597), will do this
since it has two lights. 100 watts of Halogen
lighting on each is more than I really need, but the
Glarebuster is not quite enough.
Also, I'm on a VERY tight budget and the Heath-Zenith
unit is considerably less expensive and comes with the
motion sensor and other nice features built-in. And
since I rent, I can really only get away with
installing one light.
Will the shielded (Model SL-5597 listed on IDA's
website) be OK as far as not intruding too far into
the street? The light will be mounted about 6 feet
from the gate, under the eve of the house. I want
just enough light to illuminate the concrete step in
front of the gate.
| | Eve of house
| | < about 20 feet >
| |----------------| |
| |\Gate Light | |
| |--------------- | |
| | Lawn | |
Street Stairs up to house
If I owned the place, I would probably just install
two Glarebuster's with motion sensors. I couldn't
find anything with less wattage than the two 100 watt
Quart Halogen beams on the the Heath Zenith unit.
Best,
-Adam
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Message: 5
Date: Wed, 04 Dec 2002 19:25:53 -0500
From: Barry Johnson <johnsonb52@comcast...>
Subject: Re: Shielded Lights
Adam,
1. You can use lower wattage lamps if 100 watts is more than you need.
2. Save the receipt and warranty information. Motion sensors can and do
fail.
3. Whether these flood lights intrude into the street depends on how you aim
them, and you don't have much room.
4. A fixture like that can have the lamps aimed down if mounted on a
horizontal surface. If mounted on a vertical surface, you may be hard
pressed to aim them down without interfering with the sensor.
Regards,
Barry Johnson
Adam Shiffman wrote: The shielded Heath Zenith unit (SL-5597), will do this
> since it has two lights. 100 watts of Halogen
> lighting on each is more than I really need, but the
> Glarebuster is not quite enough.
>
> Will the shielded (Model SL-5597 listed on IDA's
> website) be OK as far as not intruding too far into
> the street? The light will be mounted about 6 feet
> from the gate, under the eve of the house. I want
> just enough light to illuminate the concrete step in
> front of the gate.
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Message: 6
Date: Thu, 05 Dec 2002 03:19:29 -0000
From: "ctstarwchr" <ctstarwchr@aol...>
Subject: Re: Shielded Lights
Adam:
You might be surprised by the coverage a GlareBuster can offer if it
is mounted correctly. Within reason, the distance of coverage always
has a direct relation with the mounting height of nearly all
fixtures. Usually the cutoff point where useable illumination drops
off, depending on lamp and fixture type, ranges between 3 to 6 times
the mounting height of the luminaire.
Several months ago I designed an application using only one of these
luminaires to illuminate a 50 foot long driveway. When mounted 20
feet high the GlareBuster puts 0.02 footcandles of illuminance at the
end of the driveway when using a 100-watt incandescent bulb. That is
easily the brightness that a full moon casts onto the ground. More
light than that is not necessary for most residential purposes when
located in a fairly dark environment that is free of glare.
To see the illuminance patterns distributed with footcandle readings
included please visit the following DSLF directory. A photorealistic
rendering of the project is also included to get a rough indication
of what the light will look like after installation at that height.
Sign in with your YahooID and password and visit the following folder:
http://groups.yahoo.com/group/DarkSky-list/files/Design/
The Heath-Zenith floodlight assembly, discovered originally by Dr.
Pauley, is a fine residential fixture also, but be careful to assure
both heads point downward far enough. They kick out a LOT of very
bright bluish-white light and may be glary if not aimed correctly.
If aiming the floods downward causes interference with the sensor,
which is a possibility, you can always loosten the locking ring nut
where each luminaire connects to the mounting back and rotate each
socket assembly slightly. These luminaire sockets screw into the
mounting housing and are fixed in their position by tightening the
lock nut. See the following photo...
http://www.desatech.com/heath/large.asp?image=SL-5597_large.jpg
A light but sharp rap with a small hammer to the end of a flat blade
screwdriver fixed on one of the 6 raised tangs of the lock nut is all
it takes to loosten the nut. Be careful not to scratch the finish.
The lock nuts appear silver in the image listed above. If adjusting
the radial position of the heads be sure to readjust the shield
housings accordingly if possible. Just remember, "Lefty-loosie,
righty-tighty" when working with most threads. ;-)
Your landlord might be willing to reimburse you by means of a single
month's rent reduction for the fixture you choose to install. To
keep from being evicted be sure to get the landlord's permission and
agreement to any rent adjustment before fixing anything perminantly
to his/her property. Good luck and let us know how things turn out!
Clear skies,
Cliff Haas
http://members.aol.com/ctstarwchr
--- In DarkSky-list@y....., Adam Shiffman <adam_shiffman@y.....> wrote:
>
> I looked at the Glarebuster. Unfortunately, it won't
> really suffice to illuminate the the entire area. The
> shielded Heath Zenith unit (SL-5597), will do this
> since it has two lights. 100 watts of Halogen
> lighting on each is more than I really need, but the
> Glarebuster is not quite enough.
>
> Also, I'm on a VERY tight budget and the Heath-Zenith
> unit is considerably less expensive and comes with the
> motion sensor and other nice features built-in. And
> since I rent, I can really only get away with
> installing one light.
>
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Message: 7
Date: Thu, 5 Dec 2002 07:42:03 -0500
From: "laverne booth" <ljbooth@thevine...>
Subject: Sunset magazine article
The December 2002 issue of Sunset magazine, page 15, has a well written 2 page article about the "dark-sky movement" and "smart lighting" featuring a nice photo of IDA member Chris Luginbuhl and two associates in front of an eye-catching, full two-page starry sky background. Contact information includes the IDA web site. Sunset magazine is a very popular and widely read publication in all the western US states. Great publicity for us!
-Laverne Booth
Hesperia, California
[Non-text portions of this message have been removed]
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