1. Department of Physics and Astronomy, University of Denver, 2112 E Wesley Ave, Denver, CO 80208, USA
2. Apache Point Observatory, 2001 Apache Point Rd, Sunspot, NM 88349, USA
3. International Dark Sky Association, 3223 N 1st Ave, Tucson, AZ 85719, USA
4. SETI Institute, 189 Bernardo Ave, Suite 200, Mountain View, CA 94043, USA
5. Three Hills Observatory, UK
6. SOFIA/USRA, 30 Durey Rd, Christchurch Airport, Christcurch 8053, New Zealand