The Night Sky 20¡-30¡ (Large; North Latitude)

Hubungi Hotline Kami ! Whatshapp : 085899985100 The Night Sky 20°-30° (Large; North Latitude) A planisphere, also called a Star Chart or, sometimes, a Star Wheel is a flat multi-part chart that displays the stars visible from a particular latitude for any time and date. Our unique planisphere, The Night Sky, pioneered the use of a two sided map projection to produce a low-distortion, simple to use guide to the night sky. With The Night Sky even a newcomer will be finding constellations in the night sky within a few minutes! All of our planispheres are manufactured in the USA of the best materials to last long and retain their accuracy and usability. Latitude Ranges: Planispheres are produced for specific latitudes because the portion of the sky you will be able to see depends on where you are on the Earth. The farther north you are, the more of the northern hemisphere stars you will be able to see but the horizon will block more of the southern hemisphere. We produce our charts in more different latitude versions than any other major chart. Latitude Ranges Available for English Planispheres: 20°-30°, 30°-40°, 40°-50°, 50°-60°, Southern Hemisphere The Distortion Solution The map projection used for any planisphere is a flat representation of our spherical view of the cosmos. Some distortion of distance, scale, area, etc. always results from this process. In map projections commonly used in planispheres this distortion increases geometrically as distance from the center increases. In conventional planispheres the distortion can be extreme which makes for a confusing and difficult to use star chart. This distortion results from trying to stretch the whole dome of the sky onto a single flat map.