1. Department of Physics; Royal Military College of Canada; PO Box 17000; Station Forces; Kingston; Ontario K7K 7B4; Canada
2. University of Delaware; Bartol Research Institute; Newark; DE; 19716; USA
3. Penn State Worthington Scranton; 120 Ridge View Drive; Dunmore; PA; 18512; USA
4. LESIA; Observatoire de Paris; CNRS UMR 8109; UPMC; Université Paris Diderot; 5 place Jules Janssen; 92190; Meudon; France
5. Department of Physics and Astronomy; East Tennessee State University; Johnson City; TN; 37614; USA
6. Universidade Federal do Rio de Janeiro; Observatório do Valongo Ladeira Pedro Antônio 43; CEP; 20080-090; Rio de Janeiro; Brazil
7. ESO - European Organisation for Astronomical Research in the Southern Hemisphere; Casilla; 19001; Santiago 19; Chile
8. Space Telescope Science Institute; 3700 San Martin Drive; Baltimore; MD; 21218; USA
9. Astronomical Institute ‘Anton Pannekoek’; University of Amsterdam; Science Park 904; 1098; XH; Amsterdam; the Netherlands
10. Observatoire du Val de l’Arc; route de Peynier; 13530; Trets; France
11. Castanet Tolosan Observatory; 6 place Clémence Isaure; 31320; Castanet Tolosan; France
12. Observatoire de Juvignac; 19 avenue du Hameau du Golf; 34990; Juvignac; France
13. Obervatorio do Instituto Geografico do Exercito; R. Venezuela 29, 3 Esq.; 1500-618; Lisboa; Portugal
14. Observatoire des Quatres chemins; Calade; 06410; Biot; France