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Maximum Likelihood Estimation of Digital Image Center

Published online by Cambridge University Press:  07 August 2017

Lu Chun-Lin
Lu Chun-Lin*
Affiliation:
Purple Mountain Observatory, Academia Sinica, Nanjing 210008, China

Abstract

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A algorithm for digital image centering with the maximum likelihood method is described. The astrometric accuracy of this algorithm is similar to the two-dimensional Gaussian fitting. For saturated images, this algorithm is better than the Gaussian fitting. With the maximum likelihood method, some systematic effect, such as coma and magnitude equation, can be reduced significantly.

Type
Ground-Based Optical Astrometry
Information
Symposium - International Astronomical Union , Volume 156: Developments in Astrometry and their Impacts on Astrophysics , 1993 , pp. 113 - 116
Copyright
Copyright © Kluwer 

References

Auer, L.H., van Altena, W.F.(1978), ‘Digital image centering. II’, Astron. J. 83, 531–537.Google Scholar
Chiu, L.-T. G. (1977), ‘Astrometric techniques with a PDS microdensitometer’, Astron. J. 82, 842–848.CrossRefGoogle Scholar
Eichhorn, H., Williams, C.A. (1963), ‘On the systematic accuracy of photographic astrometric data’, Astron. J. 68, 221–231.CrossRefGoogle Scholar
Platais, I. (1991), ‘Astrometry with a PDS microdensitometer using cubic splines’, Astron. Astrophy., 241, 656–662.Google Scholar
Russell, J.L. (1976), The Astrometric Standard Region in Praesepe (M44), Ph.D. Dissertation, University of Pittsburgh Google Scholar
Stetson, P.B. (1979), ‘Photographic stellar Photometry with the PDS microdensitometer’, Astron. J., 84, 1056–1066.Google Scholar
Stobie, R.S. (1980), ‘Application of moments to the analysis of panoramic astronomical photographs’, in Application of Digital Image Processing to Astronomy, SPIE, 264, p.208–212.Google Scholar
Stone, R.C. (1989) ‘A comparison of digital centering algorithms’, Astron. J., 97, 1227–1237.Google Scholar
van Altena, W.F. (1991), ‘Photographic astrometry’, Report on Astronomy, Vol. 21A, 229.Google Scholar
van Altena, W.F., Auer, L.H. (1975), ‘Digital image centering, I.’, in de Jager, C., Nieuwenhuijzen, H.(eds.), Image Processing Techniques in Astronomy, Reidel Dordrecht, p.411–418.Google Scholar