International Association of
Double Star Observers
Everyone, world-wide—professional and amateur astronomers, students and educators—with an interest in promoting the science of double star astrometry is invited to join the IADSO as a charter member.
We have a Yahoo discussion group where you can subscribe to receive e-mails following discussions on double star research. You can also start your own discussion or respond to others' posts. Visit the IADSO discussion group to learn more.
Members receive a charter membership certificate, the IADSO Newsletter, and notification of IADSO conferences, workshops, and books. There are no membership fees, although tax deductible donations through the Collins Educational Foundation (CEF) are welcome to support student scholarships and activities. To join, simply fill out this form and allow a few weeks for your certificate to be printed and mailed to you.