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BY-NC-ND 4.0 license Open Access Published by De Gruyter Open Access February 8, 2017

Overview of Gaia Multi-Color Photometry

  • Erik Høg
From the journal Open Astronomy


Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting slight astrometric chromaticity errors of the optical system. A separate smaller telescope will obtain photometry in eleven passbands of medium width designed to serve the astrophysical analysis of the mission results. The medium-band photometry (MBP) has less angular resolution, but much longer effective integration time than the broad-band photometry (BBP).


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Received: 2003-11-7
Published Online: 2017-2-8
Published in Print: 2003-12-1

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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