International Dark-Sky Association


Welcome to the International Dark-Sky Association (IDA) home page. The IDA is a non-profit, membership-based organization. IDA's goal is to be effective -- through education about (a) the value and effectiveness of quality nighttime lighting and (b) of the solutions to the problems -- in stopping the adverse environmental impact of light pollution and space debris. We are making a difference!

Have you come from the Parade article on light pollution and IDA? Then click here for some basic information on the issues, or go on to explore our web site on your own.

The IDA can be reached via e-mail at, by postal mail at 3225 N. First Ave.; Tucson, AZ 85719; USA, via telephone at (520) 293-3198 voice, or (520) 293-3192 (fax). Please be patient, as we are very busy and traveling often delays response.

If you have a fast connection, give the enhanced version of our Web site a try. 

The following resources are available:

Our Mission and Board of Directors
How to Join or Renew
What's New?
IDA Newsletters - #35 Now Online
IDA Information Sheets - # 117 Now Online
Links and Web Resources
Relevant Newsgroups
Good Lighting Fixtures
Search the IDA Web Site

We are currently having a fund raising campaign. If you can help, please do!
Beginner's Guide to Lighting Regulation
Preserving the Astronomical Sky - An IAU-UN Special Environmental Symposium

Please address Web page questions to the IDA Web master.

All material is copyrighted (©) by the IDA, or others as noted. It may be reproduced for non-commercial usage provided that proper credit is given. 

Last update: November 23, 1998