The Montauk Observatory is a planetarium and nonprofit organization offering free year-round educational programs, including astronomy lectures and professional planetarium shows.The site has a state-of-the-art professional-grade telescope and offers a wide range of events and programs for residents to enjoy and learn about science. Programs offer amateur and professional astronomers alike the chance to view the skies; check the main Web site for a schedule of events or to make a donation. Membership in Montauk Observatory is completely free—just fill out the online application.