A research team, led by Elizabeth Waterhouse, obtained CCD images of the brightest elliptical galaxies in galaxy clusters. By measuring the apparent diameters and brightnesses of these galaxies, the team derived a Hubble Constant of 61.5 km/s/Mpc.

In Spring 1997, Elizabeth Waterhouse won second place in the National Young Astronomer Award sponsored by the Astronomical League. Her project was entitled "Determination of the Hubble Constant Through Magnitude Analysis of Elliptical Galaxies". You can read the abstract and first page of her research paper.

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