All of the written material and some of the graphics (static images and
animations) on these pages are copyrighted by Richard W. Pogge unless
otherwise noted, and may not be reproduced without written permission.
Educational or non-profit organizations wishing to reproduce or provide
links to any part of these pages must contact Richard Pogge
in writing. Please see the Usage Guidelines below for specific information.
These web pages are intended primarily for use by Ohio State University
students enrolled in Astronomy 350 during Autumn Quarter 1998. To
facilitate using these pages as part of their course work, students
formally enrolled in this section are granted permission to make single
copies of the online notes in unaltered form for exclusive personal use
only, provided that all copyright notices and citations of images and text
sources remain intact. "Personal Use", however, does not extend to
additional reproduction, alteration, distribution, or resale of these notes
in any form to anybody.
All other interested persons who are not enrolled in this course at The
Ohio State University are welcome to browse these pages, provided that they
observe the following usage restrictions:
- Educators, educational organizations, or registered non-profit
organizations may link to these pages from their websites, provided
they contact Richard Pogge (firstname.lastname@example.org)
so that I have a record of who is using this material outside of The
Ohio State University.
- You may not reproduce, distribute, or resell any of the materials
on these pages in any form, nor may you charge others to access
these pages. In particular, you are specifically prohibited from
including any of the written or image material, in whole or in part, in
course note or lecture note packages compiled with the intention of
reselling them to students enrolled in this or related courses at this
or other educational institutions.
- Citations of factual material in these pages should be to the original
sources. Please contact the author of these pages for information on
the correct citation of particular materials.
A Brief Note About Copyrights
The precise relationship between current Copyright Laws and publically
accessible electronic documents on a world-wide Internet is presently a
subject of considerable discussion and debate both inside and outside the
courts. Copyrights are an essential protection for teachers and students
alike, as they play a fundamental role in helping to preserve the integrity
of our intellectual activities (writing, images, etc.) by protecting our
creative works from commercial exploitation by others. I take the issue of
copyrights very seriously in the production of these web pages.
If you notice any inappropriately used or incorrectly cited text or images,
please contact me so that I can either seek the proper use permissions or
delete them from these pages (providing substitutions where possible).
I have made a good faith effort to be very careful about not including
copyrighted text (other than my own) in these pages, except where I have
sought specific permission from the original authors. I would appreciate
help correcting any erroneous citations to primary sources you might spot
in these pages.
Images are essential to teaching astronomy, and present a range of
copyright problems in the context of the Internet. Since copyright law
with regards to graphics is still being developed, I have little guidance
except common sense. As such, I use primarily public domain images on
these pages, taking care to correctly cite the original sources, and have
sought permission for other images (e.g., I have an agreement with the
Anglo-Australian Observatory for use of some of their copyrighted images on
Some of the images and graphics displayed during lectures are copyrighted
material not available in the public domain. While use of these images in
lecture is permitted under the heading of "Fair Use", posting these same
images to the Web is another matter altogether. I am seeking permission
from the original sources to post some of the graphics on these pages, but
not all persons have granted permission. For example, the publishers of
the textbook allow me to scan a very limited number of graphics from the
book for display in lecture (taking the place of their plastic overheads),
but they have not granted permission to post them to the web. This can be
somewhat inconvenient for the student, as a number of the images and
graphics used in lecture are not available online and so the notes are
sometimes incomplete in that sense, but this is unavoidable.
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Astronomy 350 Main Page
Updated: 1998 August 30 [rwp]
Copyright © 1996, 1998 Richard W. Pogge,
All Rights Reserved.