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Performance analysis of Latvian zenith camera

    Ansis Zariņš Affiliation
    ; Augusts Rubans Affiliation
    ; Gunārs Silabriedis Affiliation

Abstract

Since finalizing of design in 2016, the digital zenith camera of the University of Latvia was involved in a number of test observations as well as field observations at about 70 different sites. The paper presents analysis of observation results, estimation of instrument’s performance and accuracy. Random and systematic error sources are outlined. Impact of anomalous refraction on vertical deflection determination is discussed. Results of adaptation of GAIA reference star catalog for astrometric data reduction are reported.

Keyword : digital zenith camera, geodetic astronomy, vertical deflections, geoid, anomalous refraction

How to Cite
Zariņš, A., Rubans, A., & Silabriedis, G. (2018). Performance analysis of Latvian zenith camera. Geodesy and Cartography, 44(1), 1-5. https://doi.org/10.3846/gac.2018.876
Published in Issue
Apr 30, 2018
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This work is licensed under a Creative Commons Attribution 4.0 International License.

References

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Hirt, C., & Seeber, G. (2008). Accuracy analysis of vertical deflection data observed with the Hannover digital zenith camera system TZK2-D. Journal of Geodesy, 82(6), 347-356. https://doi.org/10.1007/s00190-007-0184-7

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Zariņš, A., Rubans, A., & Silabriedis, G. (2016). Digital zenith camera of the University of Latvia. Geodesy and Cartography, 42, 129-135. https://doi.org/10.3846/20296991.2016.1268434