A&A Supplement series, Vol. 128, March I 1998, 289-297
Received April 11; accepted July 21, 1997
Looking for fine structures in galaxies
M. Faúndez-Abans - M. de Oliveira-Abans
Send offprint request: M. Faúndez-Abans
CNPq/Laboratório Nacional de Astrofısica, Caixa Postal
21, CEP: 37.500-000, Itajubá, MG, Brazil
In order to enhance fine structure in direct CCD images of galaxies,
transform processing has been employed: working in the transform
domain, transform functions have been created and simple high- and
low-pass filters have been applied to the images during the process.
The results presented herein refer to a test sample of four galaxies:
ESO 143-G7, HRG 54103, NGC 5193/5193A, and NGC 5761. It is also
discussed the use of a Fourier-hologram image as a transfer function.
galaxies: ESO 143-G7; HRG 54103, NGC 5193/5193 A; NGC 5761
-- techniques: image processing ; mathematical
Copyright by the European Southern Observatory (ESO)
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