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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz

IMPACT FACTOR 2018: 0.350

CiteScore 2018: 0.24

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ICV 2017: 121.03

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Volume 12, Issue 4


Overview of Gaia Multi-Color Photometry

Erik Høg
Published Online: 2017-02-08 | DOI: https://doi.org/10.1515/astro-2017-0062


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).

Keywords: techniques; photometric orbiting observatories; Gaia Galaxy; structure


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About the article

Received: 2003-11-07

Published Online: 2017-02-08

Published in Print: 2003-12-01

Citation Information: Open Astronomy, Volume 12, Issue 4, Pages 447–450, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0062.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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