The perfect way to learn how to recognise the stars and constellations, very accurate between 47° and 57° north latitude
by Rob Walrecht
A Planisphere or ‘Star Wheel’ is the perfect way to learn how to recognise the stars and constellations. It consists of a star chart showing all stars and constellations that are visible from a certain area (latitude). However, stars rise and set and the Night Sky changes from season to season. Therefore a second disc is placed on top of the star chart, containing a ‘horizon’ that defines the visible part of the sky at any given moment, which is naturally half of the total starry sky. That moment can be set at the desired date and time. Rob Walrecht’s planisphere design is very modern and attractive. His planispheres are among the best in the world. His programme is the most extensive in the world, with English planispheres for the entire populated world, and planispheres in thirteen other languages (in 2013). The basic star chart contains some 700 stars and 300 ‘objects for binoculars’: galaxies, nebulae, open and globular clusters, double and variable stars that can be seen with the naked eye or at least with binoculars. This is a Dutch language planisphere for 52° north, perfect anywhere between 47° and 57° north, so perfect for the Netherlands and Belgium. It is a square design, 25 x 25 cm, folded and with four pages: one with the star chart/upper disc, one with instructions and a few interesting tips and two (the inside pages) containing a concise introduction to astronomy. For use in for instance: Central European latitudes, Northern USA, Southern Canada and Central Asia. Rob Walrecht Productions is specialised in customised planispheres, so you can have one for any latitude zone, in any language, in any size, shape and colours, and in any design.