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tokens: Acknowledgments Generous allocations of time on the 1m McLennnan Telescope and HERCULES spectrograph at the Mt John University Observatory in support of the Southern Binaries Programme have been made available through its TAC and supported by its Director, Dr K. Pollard and previous Director, Prof. J.B. Hearnshaw. Useful help at the telescope were provided by the MJUO management (N. Frost and previously A. Gilmore and P. Kilmartin). Assistance with the use and development of the hrsp software has been given by its author Dr J. Skuljan. Encouragement and support for this programme has been shown by the School of Chemical and Physical Sciences of the Victoria University of Wellington, as well as the Royal Astronomical Society of New Zealand and its Variable Stars South section ( http://www.variablestarssouth.org ). We thank VSSs former-director Tom Richards for advocating DSLR photometry in support of the Southern Binaries Programme, also the AAVSOnet Telescope Allocation Committee for telescope time in 2014 and 2015. We appreciate the hard work and dedication of AAVSOnet site managers Peter Nelson (BSM South) and Greg Bolt (BSM Berry). Dr P. Mayer kindly sent additional photometric details on QZ Car that were used in the construction of the OC curve. As well, Dr H. Drechsel made very useful comments regarding the effects of radiation pressure on the surficial distortions of very hot close binaries. The astrophysics group at COMU have been supportive of this research.