Comprehensive list of bodies to the limit of standard binoculars (Mag10.) Combine multiple sights while allowing for changes in track. Use a fixed position or one generated from the voyage plannner. The Star Atlas can zoom to 1° x 1.5°. Data available for 9999BC to 9999AD including Eclipses, Twilights & Solar bodies by interval. Magnetic Variation for 1600 to 2010. Prints conventional Almanac pages as backup