Open Course Info

Introduction to Astronomy


North Pole Star Trails Photo


These star trails are centered on the celestial north pole. They were recorded in a time-lapse photograph over the course of about eight hours.

This image is by the famous astrophotographer David Malin and is included here with the permission of the Anglo-Australian Observatory.



Star charts are produced on a Macintosh with the Voyager II program, and are ©1988-93 Carina Software, 830 Williams St., San Leandro, CA 94577, (510) 352-7328. Used under license.

©1996-2001 Scott R. Anderson
Last update: 2001 March 28
Please send questions, comments, suggestions, or corrections to
The material on this website may be reused as described under the Open Course License.

The Gateway to Educational Materials (GEM) is the key to one-stop, any-stop access to thousands of high quality lesson plans, curriculum units and other education resources on the Internet! GEM is a project of the U.S. Department of Education. The Introduction to Astronomy Webbook is catalogued in the Gateway, and Scott R. Anderson is a member of the GEM Consortium.