1. School of Science, University of New South Wales, PO Box 7916, Canberra, BC 2610, Australia
2. Department of Physics, International University - Vietnam National University HCM, Block 6, Linh Trung, Thu Duc, Ho Chi Minh City, Viet Nam
3. Subaru Telescope, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 650 North A’ohoku Place, Hilo, HI 96720, USA
4. UK Astronomy Technology Centre, Royal Observatory, Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
5. European Southern Observatory, Karl-Schwarzschild - Str 2, D-85748 Garching b. Munchen, Germany
6. Thuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany