Webinar instructions will be emailed before the date of the webinar.

Please log into the webinar 15 – 30 minutes before start time.

Friday, December 1, 2023 
1:00 – 3:00 pm CST

Presented by: John Barentine 

Dark-Sky Lighting and Ordinances 

  • Dark-sky lighting basics 
    • How and why we use light at night 
  • Understanding the science of light pollution 
    • Causes 
    • Negative effects of artificial light at night 
  • Quality Outdoor Lighting at Night 
  • Purpose: Visibility Needs of Users 
  • Typical Existing Outdoor Lighting – not quality minded 
    • Overlighting
    • Glary
    • Light trespass
    • Wasted energy
    • Effects on environment (plants, animals, birds, pollinators) 
  • Responsible outdoor lighting design principles and design examples 
    • Useful 
    • Targeted 
    • Low Light Levels 
    • Controlled 
    • Color 
  • Conclusion: WIN WIN quality lighting with minimal environmental impact
  • Dark-sky ordinances 
    • Overview of U.S. lighting policy 
    • Brief history of dark-sky lighting policies 
    • Goals of dark-sky friendly outdoor lighting policy 
    • Elements of lighting ordinances and suggestions for ideal constructions 
    • Examples of best practice 
    • Implementation and enforcement concerns
  • Examples of existing community outdoor lighting ordinances and implementation 
    • Tucson, AZ 
    • Fort Collins, CO 


Webinar Instructions

All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.

Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.

Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.

GoToWebinar App requirements:
Windows 7 – 10 or Mac OSX Mavericks (10.9) – macOS Catalina (10.15)

Web Browser:
The two most recent version of the following browsers:
Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge
Internet Explorer v11 (or later) with Flash enabled

Internet connection: Minimum of 1Mbps       Hardware: 2GB RAM or more

For more information, visit the Support section at


Professional Engineers:
2.0 PDHs 

2.0 HSW CE Hours 

2.0 LU|HSW*

Landscape Architects:
2.0 HSW CE Hours 

2.0 HSW PDHs*

Certified Planners:
CM| 2.0**

* Live course approval. Pre-approval for on-demand format may be available upon request.
** Live course approval. Not approved for on-demand format.
*** This course is not approved in New York; please refer to specific state rules to determine eligibility.


Continuing Education Credit Information

This webinar is open to the public and is designed to qualify for 2.0 PDHs for professional engineers, 2.0 HSW continuing education hours for licensed architects, and 2.0 HSW continuing education hours for landscape architects in all states that allow this learning method. Please refer to specific state rules to determine eligibility.

HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700) and North Carolina (S-0130). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2) and §69.6(i)(2)). Other states do not preapprove continuing education providers or courses.

The American Institute of Architects Continuing Education System has approved this course for 2.0 HSW LUs (Sponsor No. J885). Only full participation is reportable to the AIA/CES.

The Landscape Architecture Continuing Education System has approved this course for 2.0 HSW PDHs. Only full participation is reportable to the LA CES.

HalfMoon Education is an approved CM Provider with the American Planning Association. This course is registered for CM | 2.0 for Certified Planners.

Attendance will be monitored, and attendance certificates will be available after the webinar for those who attend the entire course and score a minimum 80% on the quiz that follows the course (multiple attempts allowed).

On-Demand Credit Information

The preceding credit information only applies to the live presentation. This course in an on-demand format may not be eligible for the same credits as the live presentation; please consult your licensing board(s) to ensure that a structured, asynchronous learning format is appropriate. The following pre-approvals may be available for the on-demand format upon request:

2.0 HSW LUs (AIA)



John Barentine, Ph.D

Principal Consultant, Dark Sky Consulting, LLC

Mr. Barentine was formerly the Director of Public Policy for the International Dark-Sky Association. He earned a Ph.D. in astronomy from the University of Texas at Austin, and previously held staff positions at the National Solar Observatory, Apache Point Observatory, and the Sloan Digital Sky Survey. Throughout his career, he has been involved in education and outreach efforts to help increase the public understanding of science. Mr. Barentine is a member of the American Astronomical Society and the International Astronomical Union, and is a Fellow of the Royal Astronomical Society. The asteroid (14505) Barentine is named in his honor. His interests outside of astronomy and light pollution research include history, art and architecture, politics, law and current events.

Nancy E. Clanton, PE, FIES, FIALD, LC, LEED Fellow

CEO, Visibility Innovations, LLC

Visibility Innovations, LLC a consulting firm specializing in sustainable and regenerative design. Ms. Clanton is a registered Professional Engineer. She is a member of the National Academy of Science committee on the assessment of solid state lighting. Ms. Clanton is International Standards Organization (ISO) 205 WG 7,USA delegate. She received the 2018 Edison Report Lifetime Achievement Award, 2014 ACEC Colorado Outstanding Woman Engineer Award, the International Clean Design Award, and the 2021 CU Engineering Distinguished Alumni Award.

AIA Info

AIA Provider Statement:

HalfMoon Education Inc. is a registered provider of AIA-approved continuing education under Provider Number J885. All registered AIA/CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider of learning program may be sent to AIA/CES ( or (800) AIA 3837, Option 3).

This learning program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

AIA continuing education credit has been reviewed and approved by AIA/CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

Course Title: Dark-Sky Lighting and Ordinances

Delivery Method: Live Online

Course Description: This two-hour course explains the consequences of light pollution, identifies the design issues with typical existing outdoor lighting, and provides design strategies and case study analyses of responsible outdoor lighting and community ordinances.

Learning Objectives:

Learning Objective 1:
Learners will be able to identify the sources and causes of light pollution and explain the negative effects of artificial light at night.

Learning Objective 2:
Learners will be able to examine typical existing outdoor lighting and identify common issues such as overlighting, light trespass, wasted energy, and the negative effects on the environment (plants, animals, birds, pollinators).

Learning Objective 3:
Learners will be able to utilize responsible outdoor lighting that is useful, targeted, controlled, and limited with the purpose of providing adequate visibility to users.

Learning Objective 4:
Learners will be able to analyze examples of community outdoor lighting ordinances and implementation, specifically in Tucson, AZ, and Fort Collins, CO.

LUs: 2.0                                                                                              LU Type: LU|HSWs.

Prerequisites: None

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 04/11/2026

Complaint Resolution Policy:

Complaints regarding this course can be emailed to or by calling (715) 835-5900. A HalfMoon Education representative will respond within 72 hours to resolve the complaint, which will include, but not limited to, access to another CE activity at no or reduced cost or a full or partial refund. Each instance will be resolved on a case-by-case situation.