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High Resolution Measurements from HST Power Spectra

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.

rlw@sundog.stsci.edu
Fri Apr 15 19:55:27 EDT 1994