An Electronic Technique for Improving the Astrometric and Photometric Fidelity of Pixilated Space Observations

Details An Electronic Technique for Improving the Astrometric and Photometric Fidelity of Pixilated Space Observations An Electronic Technique for Improving the Astrometric and Photometric Fidelity of Pixilated Space Observations

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1280...79o&link_type=abstract

PROCEEDINGS OF THE 2009 JOINT ANNUAL CONFERENCE OF THE NATIONAL SOCIETY OF BLACK PHYSICISTS AND THE NATIONAL SOCIETY OF HISPANIC

Astronomy and Astrophysics

Astronomy

Photometry, Charge-Coupled Devices, Scanning Electron Microscopy, Photometric, Polarimetric, And Spectroscopic Instrumentation, Charge-Coupled Devices, Image Detectors, And Ir Detector Arrays, Scanning Electron Microscopy

Scientific paper

We have devised a new technique for performing subpixel dithering by using a charge coupled device's (CCD's) electronics. By permuting the CCD phases used for collection during the integration mode of consecutive images obtained at a single pointing, one may sample an observed scene at the CCD's phase spacing rather than at its pixel spacing thus obtaining a factor of three improvement in spatial resolution for a three-phase CCD, the most commonly deployed format in astronomy. This technique reduces the need for repointing the telescope or instrument, improving operational efficiency, and may be performed with existing multi-phase CCD architectures. We report on the results of an experimental feasibility study that has quantitatively verified the concept.

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