Make a planetarium projector

Create an indoor view of the night sky by projecting a sky chart onto the ceiling

Filling your room with stars To use the projector, find a clear space on the floor for the torch in its base. Next, place the box over the torch, lay a night-sky slide on the top and switch on. You could orientate the projector so that the compass points (north, east, south and west) correspond with the edges of the ceiling. It is important to use a torch with a single, small light source (an LED or tiny bulb) and it should also produce a fairly wide beam. Our torch had a ‘Zoom’ feature and we used it on the widest setting. Before starting the project, you need to hold your torch above the chart so that its circular beam of light just spills beyond the chart’s edge, and measure…

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The Astronomer's Yearbook (Digital) - 1 Issue, Astronomer's Yearbook 2022

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