1. Department of Astronomy, The Ohio State University , 140 West 18th Avenue, Columbus, OH 43210, USA
2. The Observatories of the Carnegie Institution for Science , 813 Santa Barbara Street, Pasadena, CA 91101, USA
3. Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University , 191 W. Woodruff Ave., Columbus, OH 43210, USA
4. Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
5. Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales , Av. Ejército 441, Santiago, Chile
6. MAS, Millennium Institute of Astrophysics , Nuncio Monsenor Sótero Sanz 100, Providencia 8320000, Santiago, Chile
7. European Southern Observatory , Alonso de Córdova 3107, Casilla 19, Santiago, Chile
8. Department of Astronomy, University of California Berkeley , Berkeley CA 94720, USA
9. Coral Towers Observatory , Cairns, Queensland 4870, Australia
10. Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool L3 5RF, UK
11. Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
12. Department of Physics, The Ohio State University , 191 W. Woodruff Ave., Columbus, OH 43210, USA
13. Kavli Institute for Astronomy and Astrophysics, Peking University , Yi He Yuan Road 5, Hai Dian District, Beijing 100871, China
14. Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 92064, USA
15. Department of Particle Physics and Astrophysics, Weizmann Institute of Science , 234 Herzl St, 7610001 Rehovot, Israel
16. Instituto de Astrofísica, Pontificia Universidad Catolica de Chile, Instituto Milenio de Astrofisica (MAS) , Vicuna Mackenna 4860, Macul, Santiago, Chile
17. Harvard-Smithsonian Center for Astrophysics , 60 Garden Str, Cambridge, MA 02138, USA
18. Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, DK-8000 Aarhus C, Denmark
19. Las Campanas Observatory, Carnegie Observatories , Casilla 601, La Serena, Chile
20. Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
21. Sternberg Astronomical Institute, Moscow State University , Universitetskii pr. 13, 119992 Moscow, Russia
22. National Research Council Research Associate, National Academy of Sciences , Washington, DC 20001, USA
23. Physics & Astronomy Department, Georgia State University , 25 Park Place, Atlanta, GA 30302, USA
24. Rochester Academy of Science , 1194 West Avenue, Hilton, NY 14468, USA
25. Runaway Bay Observatory , 1 Lee Road, Runaway Bay, Queensland 4216, Australia
26. Samford Valley Observatory (Q79) , Queensland, 4520, Australia
27. DogsHeaven Observatory , SMPW Q25 CJ1 LT10, Brasilia, DF 71745-501, Brazil
28. Association Francaise des Observateurs d’Etoiles Variables (AFOEV), Observatoire de Strasbourg , 11 Rue de l’Universite, 75007 Paris, France
29. Moondyne Observatory , 61 Moondyne Rd, Mokine, WA 6401, Australia
30. Slate Ridge Observatory , 1971 Haverton Drive, Reynoldsburg, OH 43068, USA
31. Observatorio Uraniborg , MPC Z55, Ecija, Sevilla, Spain
32. Observadores de Supernovas (ObSN) , Spain
33. Observatory Inmaculada del Molino , Hernando de Esturmio 46, Osuna, E-41640 Sevilla, Spain
34. Al Sadeem Observatory , Al Wathba South, Abu Dhabi, UAE
35. Observatorio Cerro del Viento-MPC I84 , Paseo Condes de Barcelona, 6-4D, E-06010 Badajoz, Spain
36. AAVSO , 185 Alewife Brook Parkway, Suite 410, Cambridge, MA 02138, USA
37. Prince George Astronomical Observatory , 7365 Tedford, Prince George, BC V2N 6S2, Canada
38. Variable Star Observers League in Japan , 7-1 Kitahatsutomi, Kamagaya, Chiba 273-0126, Japan
39. Antelope Hills Observatory , 980 Antelope Drive West, Bennett, CO 80102, USA
40. Roof Observatory Kaufering , Lessingstr. 16, D-86916 Kaufering, Germany
41. Peter Observatory , unit 316 Sandcastles 392 Marine Pde, Labrador, Qld 4215, Australia
42. Virtual Telescope Project , Via Madonna de Loco, 47-03023 Ceccano (FR), Italy
43. Kleinkaroo Observatory , Calitzdorp, St. Helena 1B, P.O. Box 281, 6660 Calitzdorp, Western Cape, South Africa
44. Departamento de Astronomía y Astrofísica, Universidad de Valencia , E-46100 Burjassot, Valencia, Spain
45. Observatorio Astronómico, Universidad de Valencia , E-46980 Paterna, Valencia, Spain
46. Mount Vernon Observatory , 6 Mount Vernon Place, Nelson, New Zealand
47. Post Observatory , Lexington, MA 02421, USA
48. Alexander Observatory , Brisbane, Australia
49. First Light Observatory Systems , 17908 NE 391st Str, Amboy, WA 98601, USA
50. INAF – Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
51. Brisbane Girls Grammar School – Dorothy Hill Observatory , Gregory Terrace, Spring Hill, Queensland 4000, Australia
52. Department of Earth and Environmental Sciences, University of Minnesota , 230 Heller Hall, 1114 Kirby Drive, Duluth, MN 55812, USA