OSA's Digital Library

Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 7, Iss. 7 — Jul. 1, 1990
  • pp: 1237–1242

High-resolution imaging using pupil segmentation

J. Sebag, J. Arnaud, G. Lelièvre, J. L. Nieto, and E. Le Coarer  »View Author Affiliations


JOSA A, Vol. 7, Issue 7, pp. 1237-1242 (1990)
http://dx.doi.org/10.1364/JOSAA.7.001237


View Full Text Article

Enhanced HTML    Acrobat PDF (591 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Recentering and selecting short-exposure images result in significant improvements in spatial resolution compared with that for classical long-exposure images. A maximum gain in resolution of the order of 3 is possible for a D/r0 between 3 and 6, depending on the selection rates. A pupil-segmentation experiment has been performed at the Cassegrain focus of the Canada–France–Hawaii telescope to match the optimum values of D/r0. A photon-counting camera records short-exposure images. The software processing is made after acquisition of the data. Recentering is made by cross correlation of the short-exposure images with a long-exposure image of a star or a contrasted object. We present results obtained on the gravitational lens Q2237+030. A full width at half-maximum of 0.29 arcsec has been achieved with this method. The gain in resolution is approximately 2.3 compared with that for classical imaging. However, we need to count enough photons for reliable recentering; this prevents us from achieving the theoretical gain in resolution. We expect to overcome this limitation in the case of crowded fields or with the use of new object-reconstruction methods.

© 1990 Optical Society of America

History
Original Manuscript: August 24, 1989
Manuscript Accepted: February 2, 1990
Published: July 1, 1990

Citation
J. Sebag, G. Lelièvre, J. L. Nieto, E. Le Coarer, and J. Arnaud, "High-resolution imaging using pupil segmentation," J. Opt. Soc. Am. A 7, 1237-1242 (1990)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-7-7-1237

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you wish to use one of your free member downloads to view the figures, click "Enhanced HTML" above and access the figures from the article itself or from the navigation tab.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited