Celestial Coordinate Systems, Time and Place(25 slides) $50

This slide set illustrates the celestial sphere with coordinate systems along with reference planes of the horizon, the celestial equator, and ecliptic. The concepts of sidereal vs solar day and the equation of time are clearly represented.

Copyright 1999 by Pan Terra Inc., PO Box 556, Hill City, SD, USA 57745.

All rights reserved.......Tel or fax 605-574-4760