1. Instituto de Astronomía, Universidad Nacional Autónoma de México, A. P. 70-264, C.P. 04510, México, D.F., Mexico
2. Department of Physics & Astronomy, Johns Hopkins University, Bloomberg Center, 3400 N. Charles St., Baltimore, MD 21218, USA
3. School of Physics, University of New South Wales, NSW 2052, Australia
4. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)
5. School of Physics, Sydney Institute for Astronomy (SIfA), The University of Sydney, NSW 2006, Australia
6. Australian Astronomical Optics, AAO-USydney, School of Physics, University of Sydney, NSW 2006, Australia
7. International Centre for Radio Astronomy Research, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
8. Australian Astronomical Optics, AAO-Macquarie, Faculty of Science and Engineering, Macquarie University, 105 Delhi Rd, North Ryde, NSW 2113, Australia
9. Department of Physics and Astronomy, Macquarie University, NSW 2109 Australia
10. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
11. SOFIA Operations Center, USRA, NASA Armstrong Flight Research Center, 2825 East Avenue P, Palmdale, CA 93550, USA
12. Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany