August 11 Workshop: Double Stars

Spend the evening of August 11 at Hidden Valley Observatory learning about double stars. See double stars through several member scopes and via long-exposure imagery taken with the new HVO scope/camera.

2017 Star Party Workshop Dates

Join us this summer at Hidden Valley Observatory. Spend an evening learning about the night sky and viewing stars, planets and nebulae through both observatory and member-owned telescopes. No charge!

New Section: Member AstroImaging

This image of Comet 41P/Tuttle, now visible with small telescopes near the bowl of the Big Dipper, was taken by BHAS member John Adler on March 28, 2017. Click on the comet for more member images and video, or visit Earth Sky for more about Comet 41P/Tuttle.

Become a Member of Black Hills Astronomical Society!

Learn more about Black Hills Astronomical Society, located in Rapid City, South Dakota, and the benefits of becoming a member.

Private Star Party Workshop?

Interested in a private star party workshop for your organization? Learn more here.