Next: Introduction
High Resolution Measurements from HST Power Spectra
P. Nisenson and E. Falco
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street,
Cambridge, MA 02138
R. Gonsalves and S. Ebstein
Electro-Optics Technology Center, Tufts University,
4 Colby Street, Medford, MA 02155
Abstract:
Power spectral analysis (PSA) has proven to be an important tool for
high spatial resolution measurements from ground based interferometry.
It is particularly useful for parameter estimation of stellar
diameters, binary separations, and stellar asymmetries. While many
images from HST are far too complicated for PSA, there are a class of
scientific problems for which it is a very effective technique for handling
the problems created by the HST point spread function. We have been
applying PSA to images of gravitationally lensed QSOs, and other
objects with some surprising results.