Abstract
A study has been made of a Gram–Charlier
matched filter for Shack–Hartmann sensing
of wavefront slopes. The method is based on modeling the point-spread function
by an expansion in terms of Gauss–Hermite
polynomials. We present results for several subaperture/coherence area sizes both with and without CCD read noise. A more
accurate estimation of the local slopes can be achieved at low light levels
in this way than with the standard first-moment estimator.
© 1998 Optical Society of America
Full Article |
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Figures (2)
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Tables (1)
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Equations (11)
You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription