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IDA Arkansas Section leader Jim Fisher featured in Arkansas Online.
An Inexpensive Light Pollution Solution
By Dave Oesper, IDA West Texas
For a total cost of around $21, you can combine the Dark Sky bulb from Bulbrite ($10.25) with a single floodlight bulb holder ($10.48—white model shown, black would better match the bulb), to give you (or your neighbor) a very effective full-cutoff or at least highly directional outdoor light. A rectangular box instead of a circular electrical box could be used.
The Dark Sky bulb is a 15-watt compact fluorescent (CFL) with a rated lifetime of 8000 hours and a minimum starting temperature in the range of -10° to 0° F. This bulb has an integrated external adjustable shield and reflector, generates 900 lumens of light at a color temperature of 2800K, which is a very pleasing warm white similar to incandescent.
Second, when the bulb burns out, you have to purchase a new Dark Sky bulb. You can't just replace the CFL and reuse the external shield and reflector system. Along the same lines, the Dark Sky comes only in a 15W CFL configuration. If the bulb were completely separate from the shield and reflector, you could use a lower-wattage bulb for many applications.
Third, Bulbrite should offer a 2800K LED model. This would probably automatically make the bulb more water resistant, and not being able to change out the light source separately from the shielding would be much less of an issue with a lifetime of 50,000+ hours.
For base-up applications, Bulbrite makes another model (CF15C/DS/BU) which provides very effective full-cutoff downlighting.
IDA Chapter Stars
Illinois at Large Chapter Leader Dave Toeppen wins 2011 David L. Crawford Lifetime Achievement Award
Toppen was one of IDA's earliest and most passionate members. Dave was the longtime leader of the Illinois at Large IDA Chapter, and according to IDA Board member Debra Norvil, the heart and soul of the dark sky movement in Illinois. In Mount Prospect he succeeded in getting proper street lighting installed with side shields to protect residents. He worked with the Village of Homer Glen for many years to help them establish a good outdoor lighting ordinance and then apply for Dark Sky Community status. Until his death he was working with a Wisconsin Indian tribe to install fully shielded lighting at a casino they are building.
IDA New York Leader Susan Harder recognized as Long Island Sierra Club's Environmentalist of the Year
For more than a decade, this East Hampton resident has been educating local municipalities about the often misunderstood subject of light pollution. As a result, codes and guidelines have been implemented to save taxpayers' money and lower Long Island's carbon footprint.Read more >>
Chicago's Adler Planetarium Exhibition "Hidden Wonders" Studies Light Pollution
Slide show by IDA Board Member (and leader of IDA Chicago) Audrey Fischer. This fun and informative exhibit was made possible by her hard work. View slide show >>
Ordinances and Civic Action
Thanks to the hardworking Chapter leaders and volunteers who have made a difference in their area!
NEW! Dark Sky legislation passes in Norman, OklahomaRead more >> (22 June 2011) The Norman City Council voted 6 to 2 Tuesday night to adopt a contentious outdoor commercial lighting ordinance.
Congratulations and thank you to Eileen Grybowski and Tom Kovach!
NEW! State legislation to protect McDonald Observatory passed in Texas! (26 May 2011) Read more >>
Hearty congratulations to Dave Oesper, Gil Bartee, Bill Wren and the rest of the Big Bend and McDonald Observatory coalition, and to Benjamin Jones of IDA Texas!
Dark sky friendly legislation passes in Maryland Efforts of Maryland Delegate Al Carr and IDA Board Member Leo Smith have paid off in the passage of Maryland bill HB643. This bill prohibits the use of State funds to install or replace a permanent outdoor luminaire for lighting on the grounds of any State building unless the luminaire meets energy efficiency and dark sky requirements. Read bill >>
Porter County, IN Passes Light Pollution Prevention Resolution
Lighting Progress in Illinois, USA
Nite-Net is the Chapters eZine available to all Chapter leaders and members for free. Published monthly, the magazine includes features on recent studies or upcoming events of interest to the Chapters. It also highlights Chapter activities and creates a forum for Chapter Leaders to share ideas or ask questions. (A sample Nite-Net is provided: September 2008)
Nite Net is currently on hiatus, but the archive is available. For back issues, please login as a member.
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NEW Lighting Resource
Want to learn more about the mechanics of lighting but don't know where to start? Learn the common lighting terms and you are on your way.
Lumens to Watts and Footcandles: Three Important Terms in LEED by Sara Gudeman, LEED AP EIT, for greenbuildings.com
Reports of Interest
Rational for Color Quality Scale, Yoshi Ohno and Wendy Davis, NIST (June 8, 2010), comments to the authors are encouraged. Download the .pdf here>>
The UK has recently produced a number of bat studies, emphasizing the importance of night to habitat and procreation.
Student Jake Longenecker, a winner of the George & Edythe Taylor Student Award, has provided the following study on fireflies from his science course.