Open Course Info

Introduction to Astronomy


Partial Lunar Eclipse

1997 March 23/24


The partial lunar eclipse of 1997 March 23/24 was visible from all of North America, but was best observed from the eastern seaboard. The Moon began to enter the Earth's umbra (total shadow) at 9:58 P.M. EST, mideclipse occured at 11:39 P.M. EST, and the Moon exited the umbra at 1:21 A.M. EST. At mideclipse 92% of the Moon lay in the umbra, and it took on the reddish hue observed with total eclipses, with a bright sliver of light at the top.

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

©1997 Scott R. Anderson
Last update: 1997 February 2
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.