Using materials in the Messier pages:
Royalties, © Copyrights, Usage Restrictions and Regulations

Nevertheless, many of these materials are copyrighted, subject to royalties, or usage restrictions. This is normally, but not always, indicated in the relevant pages (e.g., near the materials) to our best knowledge, either by an explicit copyright statement or a source acknowledgement. In any case, it is the responsibility of the user to observe all third party rights of the materials in our pages (especially in case of any for-profit usage); in particular, check with any source, indicated in our pages or not, if you consider such usage. Please email me in case you have any questions.

• Summary of some image sources, with indication of usage restrictions

The SEDS Messier Catalog database as a whole is the collective intellectual property of its creators, SEDS, and in its present form, of its maintainer and his co-author. Materials not restricted by above regulations may be freely used for non-profit, educational purpose, if the SEDS Messier database is properly acknowledged as source; moreover, we appreciate to get informed by email in this case. For any other intended use, please contact the maintainer. Also, as SEDS is in the steady need of fund raising for their non-profit endeavors (including their internet services), contributions as you think is appropriate are certainly appreciated, if you use our materials and have a grant for this.

Last Modification: 19 Dec 1997, 15:10 CST