The Chester County Astronomical Society is a member of the Astronomical League. The Astronomical League is a federation of astronomical societies in the United States. The Astronomical League's function is to promote the science of astronomy by fostering astronomical education, providing incentives for astronomical observation and research, and assisting communication among amateur astronomical societies.
All members of Chester County Astronomical Society are enrolled in the Astronomical League, and receive the league's quarterly newsletter, The Reflector. Members are also eligible to receive discounts on astronomy-related books and materials through the Astronomical League. Members of the Chester County Astronomical Society are also invited to attend the regional and national conventions of the Astronomical League.
For more information about its mission and member societies, contact the Astronomical League.