Two observatories are open to amateur stargazers. The Discovery Museum at 4450 Park Avenue, Bridgeport, has a planetarium show that changes seasonally, with presentations offered most afternoons. Call 203-372-3521 or go to discoverymuseum.org.
The observatory at the Stamford Museum and Nature Center (203-322-1646) on Scofieldtown Road is open Friday nights from 8 to 10 (8:30 to 10:30 in summer), weather permitting. The planetarium in the main museum building offers shows on Sundays at 3. For details and best moon-viewing nights, visit stamfordmuseum.org.