Class: Celestial Studies (Professor Glimmerwick)
Pairs with: Lesson 33, "Dark Skies," and the constellation lessons.
Trip type: Night Sky, At Home & Out.
Where it works: Anywhere the night is allowed to be night: your yard or window to begin with, and for the fuller version, a field, park, or shoreline away from streetlights. The sky is the one classroom every scholar already lives under. Free, after dark, and it wants a clear, moonless night; give your eyes a quarter hour to adjust and the mission about an hour under the stars.
Why we're going: Lesson 33 names light pollution and explains what it takes from the sky; the constellation lessons give you shapes to find. This trip tests both with your own eyes. You will measure your local sky honestly, count what it lets you see, and, if you travel for the second level, stand under a darker one and learn what has been overhead all along.
The mission: Find three constellations with your naked eyes, no telescope and no binoculars required. A sky app may help you name what you are looking at, but the finding is done by your own eyes. While you are out there, pay honest attention to how much of the sky your local lights are eating. You will come home holding three constellation sketches, a star count that grades your sky, and a firsthand answer to what light pollution actually costs.
What to record:
The names and shapes of the three constellations you found, each with a small sketch.
The date, time, and direction you were facing for each one.
How many stars you could count in one constellation's area, as a measure of how dark your sky was.
What light pollution did to your view: which parts of the sky were washed out, and by what (streetlights, a lit building, the moon itself).
The faintest star you could see near a bright one.
How it runs:
Level One — At Home: Do the whole mission from your yard, balcony, or a window with the house lights off behind you. Let your eyes adjust for fifteen minutes before judging what is visible; the sky improves while you wait.
Level Two — In Person: Travel on a clear, moonless night to the darkest public place you can safely reach, and repeat the mission there. Compare the two skies star by star. Most scholars are startled by how much was overhead all along.
Picture ideas for the gallery:
Your observing spot at dusk, before dark, so the gallery sees the place the sky was measured from.
Your setup: notebook, red torch, and chair, waiting for your eyes to adjust.
One of your constellation sketches, photographed in daylight. A good sketch beats a blurry phone shot of the sky.
The horizon glow over your town from your dark spot, if Level Two took you out; that orange dome is the lesson made visible.
Etiquette & safety: Go with someone, or tell someone where you will be and when you will be back. Take a dim or red torch, watch your footing in the dark, and stay where you are allowed to be.
Field Report: What is the biggest difference between the sky you expected and the sky you actually got? File your report in the comments: where you went, what you found, and one thing that surprised you. Photographs go to the Field Trip Gallery through the form on the Field Trip Office page, with the town and country where they were taken.
