1. Department of Physics, Clarkson University, 8 Clarkson Ave, Potsdam, NY 13699, USA
2. Department of Physics and Astronomy, Embry-Riddle Aeronautical University, 3700 Willow Creek Road, Prescott, AZ 86301, USA
3. Department of Physics, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
4. Mount Wilson Observatory, The CHARA Array of Georgia State University,Mount Wilson, CA 91023, USA
5. Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109, USA
6. Institute of Astrophysics, Department of Physics and Astronomy, KU Leuven, Celestijnlaan 200D, B-3001 Leuven, Belgium
7. Centre de Recherche en Astrophysique du Québec, Département de physique, Université de Montréal, CP 6128, Succ. C.-V., Montréal, QC H3C 3J7
8. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
9. CRESST II & X-ray Astrophysics Laboratory, Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
10. Department of Physics, Institute for Astrophysics and Computational Sciences, The Catholic University of America, Washington, DC 20064, USA
11. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
12. Max Planck Institute for Radio Astronomy, Auf dem Hügel 69, D-53121 Bonn, Germany
13. Department of Physics and Astronomy, University of Exeter, Exeter, Devon EX4 4QL, UK
14. Steward Observatory, 933 N. Cherry Avenue, University of Arizona, Tucson, AZ 85721, USA
15. Institut de Planétologie et d’Astrophysique de Grenoble, Université Grenoble Alpes CS 40700 38058 Grenoble Cédex 9, France
16. Observatori Puig d’Agulles, Passatge Bosc 1, E-08759 Vallirana, Barcelona, Spain
17. Department of Physics and Astronomy, Georgia State University, 33 Gilmer Street SE Atlanta, GA 30303, USA
18. Schnörringen Telescope Science Institute, 51677 Wipperfürth, Waldbröl, Germany
19. Observatoire de la Tourbiére, F-38690 CHABONS, France
20. Balmes 2, E-08784 Piera, Barcelona, Spain
21. The Birches Torpenhow, Wigton, Cumbria CA7 1JF, UK
22. 1178 Mill Ridge Road, Arnprior, ON K7S3G8, Canada
23. Department of Astronomy and Space Sciences, Faculty of Science, Ankara University,06100 Tandogan, Ankara, Turkey
24. Observatório do Centro de Informação Geoespacial do Exército - Lisboa, Lisboa, 1849-014, Portugal
25. VdS Section Spectroscopy, Germany
26. Teide Pro-Am Collaboration
27. D-31180 Giesen, Lower Saxony, Germany