CARDOSO, J. V. M.; http://lattes.cnpq.br/3267230342393209; CARDOSO, José Vinícius Miranda.
Résumé:
Digital signal processing techniques are constantly more important in the task
of information extraction from digital images acquired by space telescopes. Point spread
function photometry enables the mathematical modelling of an arbitrary number of sources
in a single image such that it is possible to perform image reconstruction even if the sources
are coupled. In this report, we present the development of estimators for the point spread
function of the space telescopes NASA Kepler and NASA TESS. The estimators are based
in the least squares method and the maximum likelihood method when considering that
the underlying distribution of the observations is Poisson.