Observatory, University of Virginia, Charlottesville, Virginia
Since the introduction of
the photographic plate into astronomy over a century ago great improvements
have been made in the accuracy of the results from measurements of the plates.
With our developing technological and scientific skills came advances in
manufacturing, exposing, and measuring photographic plates. However, it now
seems that the rate of improvement has slowed and that future developments
(barring presently unforseen breakthroughs) will only marginally improve the
accuracy of results from photographic plates.