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VIRTUAL OBSERVATORY: "Plate Content Digitization, Archive Mining and Image Sequence Processing"
April 27-30, 2005
Auspices of COST Actoin 283: "Computational and information infrastructure in the Astronomical DataGrid"
Sofia, Bulgaria

Organizers
Milcho Tsvetkov, Bulgarian Academy of Sciences, Space Research Institute, and Valeri Golev, Sofia University, Department of Astronomy

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ICRF CCD Images Data-Base - methods of image processing
by
Petre Popescu
Astronomical Institute of Romanian Academy, Str. Cutitul de Argint 5, Bucuresti - 040557, Romania
Coauthors: R.Popescu, A.Nedelcu, P.Paraschiv

he astrometric division of Astronomical Institute of the Romanian Academy begun the observations for connecting optical and radio reference systems. We obtained till now, a significant amount of astronomical data which will became our new CCD Images Data-Base regarding ICRF extra-galactic radio-sources. The drawback of narrow-field astrometric observations was overcome by using overlapping FITS frames, in order to include in the final image enough reference stars to compute an accurate plate solution. The paper shows the methods of stacking and overlapping images with application to open clusters used as astrometric calibration regions.

Date received: February 21, 2005

Copyright © 2005 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # capb-11.