The summit of Mt. Lemmon Observatory.

Dr. Don McCarthy
Astronomer & Director

Steward Observatory
The University of Arizona
933 N. Cherry Ave.
Tucson, AZ 85721-0065



Campers and highlights over the first 25 years.


Milky Way from the summit of Mt. Lemmon. (Courtesy: Evan Broby)


Telescope panorama at the summit of Mt. Lemmon.


The Kuiper telescope

Astronomy Camp 2025!
SpaceX launch viewed near the 32-inch Schulman telescope during the Beginning Teen Camp, June 18, 2024

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As an Astronomy Camper you will explore the dark skies of Southern Arizona and experience the excitement of scientific inquiry. The Sky Island environment of Mount Lemmon Observatory immediately north of Tucson, Arizona provides an inspirational residential setting. Since 1988, thousands of teenagers and adults have journeyed here worldwide to experience real astronomy, operating research-class telescopes and technology, interacting with leading scientists, interpreting their own observations, investigating their own questions and curiosities, and having fun.

We seek to promote a holistic understanding of science, quantitative thinking, and technology through hands-on, interactive explorations, leading to deeper understanding of Nature and career opportunities. Our staff of embedded professional mentors and Camp alumni inspires, prepares, and helps retain the next generation of leaders and scientists.

Each Camp is an "immersion" experience emphasizing a hands-on learning approach with activities driven by student engagement and interest. A prior background in astronomy is not required, nor is a connection with The University of Arizona. These science camps are available internationally to both teenagers and adults. Need-based scholarships are available!

Parents often ask why the teen Astronomy Camps are so "life-changing." Educational research reveals several reasons:
  • Real scientists as mentors.
  • A personal approach, treating youth as colleagues rather than children.
  • Authentic scientific inquiry with realistic projects involving modern equipment.
  • Student peers with common interests in science and engineering.
  • A fun attitude toward learning, exploring ideas, and searching for answers.
  • The aesthetic qualities of the "Sky Islands" of Southern Arizona with dark skies.