Telescope workshop, “Learning to Navigate the Sky – Using Charts and Apps,” at Perkins Observatory, 3199 Columbus Pike (U.S. 23), Delaware. The observatory is offering a series of four monthly workshops between February and May to help participants become experienced telescope observers. The two-hour workshops will be offered at 7 p.m. on the second Thursday of the month. Remaining workshops in the series are April 13, “Binocular Basics – Using Binoculars to Augment Your Telescope Observing,” and May 11, “Advanced Observing Techniques – Lunar, Deep Sky, and Solar Observing.” Workshop tickets are $30 per session. Reserve tickets by calling (740) 363-1257. Learn more at www.owu.edu/perkins.