Institution: | APS Division, Department of Physics and Astronomy, Queen's University of Belfast, Belfast BT7 1NN;Isaac Newton Group of Telescopes, Apartado 321, E-38700 Santa Cruz de La Palma, Tenerife, Spain;Department of Physics and Astronomy, University of St Andrews, North Haugh, Fife KY16 9SS;HM Nautical Almanac Office, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon. OX11 0QX;Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Tenerife, Spain |