Blader door items (2379 in totaal)

Many observers harbor misgivings about their telescope. The manufacturer may have guaranteed accuracy to one-quarter wavelength or as diffraction-limited but most telescope users have, at best, only a hazy idea of how to personally verifying such…

This book had its origins in my skywatching guides for amateur astronomers. As I came to describe each constellation, I found myself wondering about its origin and the way in which ancient people had personified it in mythology.…

From 1600 to 1800 a number of beautiful star atlases depicting the constellations according to ancient myths and tales were printed. In Europe, where the quality of celestial atlases was unmatched, classical Greek traditions prevailed and the…

Explore the beauty and awe of the heavens through the rich celestial prints and star atlases offered in this third edition book. The author traces the development of celestial cartography from ancient to modern times, describes the relationships…

The Story of the atomic time: Until the 1950s timekeeping was based on the apparent motion of the Sun that in turn reflected the rotation of the Earth on its axis. But the Earth does not turn smoothly. By the 1940s it was clear that the length of the…

How does it happen that billions of stars can cooperate to produce the beautiful spirals that characterize so many galaxies, including ours? This book reviews the history behind the discovery of spiral galaxies and the problems faced when trying to…

Tentoonstelling te Brugge Openbare Bibliotheek " De Biekorf" van 9 december 1995- 31 januari 1996

This is an introductory textbook on spherical and positional astronomy. It is entirely suitable for use by students with no prior knowledge of classical astronomy. At the same time, it is sufficiently comprehensive to make it a useful background…