- Department of Physics University of Durham   Level One School of Physics University of New South Wales   General Education Measuring the Hubble Constant Aims of the Experiment Introduction Standard Rods Redshifts and Spectra Estimating the Hubble Constant Measuring the Diameters of Galaxies in the HDF Measuring Galaxy Redshifts in the HDF Calculation and Discussion Summary References Ian ...www.phys.unsw.edu.au/astro/wwwlabs/hdfSize/hdfSize_top.html