Tirion Double-Sided Multi-Latitude Planisphere

Video Description With a universe of options to explore, it can be difficult to track what awe-inspiring treasures are currently visible in your sky. The Tirion double-sided planisphere can help guide your explorations throughout the year. Created by noted celestial cartographer Wil Tirion, this planisphere works over a vast range of northern hemisphere latitudes and uses a double-sided design to minimize distortion. It is made of durable plastic and the celestial dials are secured with no-corrosion brass rivets. About Wil Tirion Based in The Netherlands, Tirion has been crafting stars maps since the 1970s and became a professional uranographer shortly after the publication of his highly regarded Sky Atlas 2000.0 in 1981. How To Use How To Use the Tirion Planisphere: Turn the upper sheet so that the appropriate local time and the date match. If the clock is set to daylight saving time, subtract one hour from the time on your watch. This side of the planisphere then shows the stars