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On a clear night sky, head out to the backyard with star charts or night sky apps and look up.

Most are still made of metal, but of thin tubes tied together by wires, creating the netlike effect of openwork weaving, and the graphic eccentricity of star charts.

“Dig out the stew and bread recipes,” wrote Alice Brown of Shelburne, Vt. “Get a good star chart and relearn all those major constellations,” she added.

And then consult a star chart to see where the telescope is pointing.

Dr. Bode revisited Celeste “and had her do our star charts, one for Josie, one for me,” his daughter said, “because he figured she must know something.”