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Crowded Field Photometry using Post-Exposure Image Sharpening Techniques*

Published online by Cambridge University Press:  12 April 2016

R.M Redfern ,
A. Shearer ,
R. Wouts ,
P. O’Kane ,
C. O’Byrne ,
P.D. Read ,
M. Carter ,
B.D. Jordan  and
M. Cullum
R.M Redfern
Affiliation:
Physics Department, University College Gal-way, Ireland
A. Shearer
Affiliation:
Physics Department, University College Gal-way, Ireland
R. Wouts
Affiliation:
Physics Department, University College Gal-way, Ireland
P. O’Kane
Affiliation:
Physics Department, University College Gal-way, Ireland
C. O’Byrne
Affiliation:
Physics Department, University College Gal-way, Ireland
P.D. Read
Affiliation:
Dublin Institute for Advanced Studies, Ireland
M. Carter
Affiliation:
Dublin Institute for Advanced Studies, Ireland
B.D. Jordan
Affiliation:
Rutherford-Appleton Laboratory, United Kingdom
M. Cullum
Affiliation:
European Southern Observatory, Germany

Abstract

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The technique of image sharpening which allows high resolution images to be produced from ground-based telescopes is applied to the problem of photometry in crowded field regions - such as close to the cores of globular clusters. The conditions for image sharpening are discussed and the technique is demonstrated using simple objects (close double stars). Preliminary results from image sharpening of M15 are presented.

Type
Session 3 New Techniques
Information
International Astronomical Union Colloquium , Volume 136: Stellar Photometry – Current Techniques and Future Developments , 1993 , pp. 147 - 153
Copyright
Copyright © C.J. Butler and I. Elliottt 1993

Footnotes

*

This article describes work being carried out with the William Herschel Telescope in the Spanish Observatorio del Roque de los Muchachos of the Institute de Astrofisica de Canarias and the New Technology Telescope of the European Southern Observatory.

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