Light Pollution Lab February Version
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School
University of California, San Diego *
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Course
107
Subject
Astronomy
Date
Apr 3, 2024
Type
Pages
8
Uploaded by AgentYak3506
Light Pollution Lab Name _____________________ Introduction
In this lab you will directly investigate the effects of light pollution in your neighborhood in three steps. •
Part 1: You will read important information about light pollution and take a brief quiz on Canvas. •
Part 2: You will choose a location within your community, observe which types of outdoor lighting are used, and assess their impact. •
Part 3: You will make observations at night to determine the overall darkness of the sky. Part 1: Light Pollution Basics
Please read the materials and watch the videos posted on canvas, then complete the Light Pollution Basics quiz online. Part 2: Neighborhood Lighting Assessment This portion of the lab should be completed outdoors at night, ideally in your neighborhood. However, you could also do this at your workplace or somewhere else that you feel safe at night. Only if it is safe, take a walk around the area after it is dark. It is highly recommended that you bring a friend or relative with you; do not walk around alone at night anywhere that you feel unsafe. Make sure to respect your neighbors’ privacy, and do not take any photographs into their windows. •
You will need to bring several things with you: o
This document o
Clipboard and paper or notebook for taking notes on what you observe o
Pen or pencil o
Smartphone or camera + flashlight Observing Glare 1.
Try to look up at the stars. How much does glare (direct light shining in your eyes) affect your experience in this neighborhood? Do you find that you need to move around to find spots that aren’t in direct light, or is there very little glare?
Observing Light Trespass 2.
If you’re at your hom
e or workplace, look all around the building. Is there any light trespass that your residence or workplace is causing onto other properties? 3.
If you’re at your home or workplace, look all around the building. Is there any light trespass that other lights are causing onto your residence or workplace? If so, describe it. Observing Lighting Fixtures 4.
What type of street lights are used in the area? Describe the color and brightness of the street lights. Are they shielded or unshielded? (If the street lights are too bright to tell the shape of the fixture, you may need to return in the daytime.) 5.
What other types of outdoor lighting are used on or around buildings? Are these lights shielded or unshielded?
Photographs Take 5 photographs of outdoor lighting. You will upload these to Canvas. Evaluating Outdoor Lighting 6.
For each light that you photographed, decide which example light from the next page it matches most closely, then state wither this is an unacceptable/discouraged light fixture or an acceptable light fixture. 7.
Overall, do you think this neighborhood does a good job or a poor job at limiting light pollution? Explain your reasoning and justify your answer. Light fixture Which type in the examples picture does it best match? Is it unacceptable/discouraged or acceptable? Photo 1 Photo 2 Photo 3 Photo 4 Photo 5
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