Abstract About 3000 CCD measurements of double stars have been made in one or both filters V and R on the 1m Jacobus Kapteyn Telescope at La Palma. The Jacobus Kapteyn Telescope is operated on the island of La Palma by the Royal Greenwich Observatory in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. The stars form part of the INput CAtalogue (INCA) of the astrometric satellite HIPPARCOS, and require both astrometry and photometry in order to facilitate reduction of the HIPPARCOS measurements. The primary components of the binaries have visual magnitudes between 8m and 12m, and the apparent separations between components range from 0″.5 to 30″. The difference in the separation obtained with the two filters is discussed and illustrated for 2100 systems: the dependence upon separation and magnitude difference between components is clearly and quantitatively shown.


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    Titel :

    Double star CCD astrometry and photometry


    Beteiligte:
    Lampens, P. (Autor:in) / Argue, A.N. (Autor:in) / Irwin, M.J. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 11 , 2 ; 119-122


    Erscheinungsdatum :

    1991-01-01


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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