Affiliation

Observatory Scientist Emeritus
NSF's National Optical-Infrared Astronomy Laboratory
Visiting Professor, University of Leiden, The Netherlands

Employment

• Observatory Scientist: National Optical Astronomy Observatory, 2002-present
• Consultant: Science Education, Optical Physics, Optical Engineering, 1993-2002
• Associate Scientist: AURA Gemini 8-Meter Telescope Project, 1991-1993
• Instrument Scientist: University of Arizona, 1989-1991
• Senior Engineer: Martin Marietta Aerospace, 1980-1989
• Science Teacher: Air Academy School District, 1977-1980

Professional Affiliations and Activities

• American Association of Physics Teachers, Fellow 
• American Astronomical Society
• American Geophysical Union
• Illuminating Engineering Society
• International Astronomical Union
• International Dark Sky Association
• National Science Teachers Association
• Optica, Fellow
• SPIE - The International Society for Optics and Photonics, Fellow
• Colorado State University, Department of Physics: Affiliate Faculty, 1977-1987
• International Year of Astronomy 2009: U.S. Project Director
• “Hands On Optics: Making a Difference with Light": Project Director
• “Teachers Leaders in Research-Based Astronomy”: Project Director
• “NOAO/NASA Spitzer Space Telescope Observing Program for Students and Teachers”: Project Co-Director
• U.S. Telescopes Kits and Optics Challenges Working Group (Galileoscope), International Year of Astronomy 2009: Chair

Awards and Honors

• American Association of Physics Teachers: Robert A. Millikan Medal, 2016
• AURA: Association of Universities for Research in Astronomy Award, 2011
• American Association of Physics Teachers: Fellow
• Colorado Secondary School: Teaching Award, 1979
• Martin Marietta: Distinguished Publication Award, 1986
• Martin Marietta: Distinguished Publication Award, 1985
• Martin Marietta: Distinguished Publication Award, 1984
• Martin Marietta: Inventor Award, 1986
• Martin Marietta: Inventor Award, 1984
• Martin Marietta: Inventor Award, 1983
• NASA: Group Achievement Award, 2011
• NASA: Group Achievement Award, 2007
• National Association of Geoscience Teachers: Distinguished Lecturer, 2007-2010
• NOAO: National Optical Astronomy Observatory Excellence Award, 2005
• OSA: Esther Hoffman Beller Medal, 2011
• OSA: Fellow
• SPIE: Fellow
• SPIE: Educator Award, 2018
• Tucson Metropolitan Education Commission: Crystal Apple Award, 2011

Specific Research Interests

• Science education program and instructional materials design
• Science communication and engagement strategies, especially for groups underrepresented in STEM
• Optical system design and analysis, stray light, and optical materials