Mechanical and optical tests of Zeiss THEO 010 and 020 nonmagnetic theodolites 
during the IAGA workshop 2018 at Conrad Observatory

Matzka, J.; Wenger, T.; Krüger, J.; Morschhauser, Achim

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Mechanical and optical tests of Zeiss THEO 010 and 020 nonmagnetic theodolites during the IAGA workshop 2018 at Conrad Observatory

Authors

/persons/resource/jmat

Matzka, J.
2.3 Geomagnetism, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Wenger, T.
External Organizations;

Krüger, J.
External Organizations;

/persons/resource/mors

Morschhauser, Achim
2.3 Geomagnetism, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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https://www.conrad-observatory.at/index.php/downloads-en/category/5-cobsjournal?download=315:cobsjournal-5
(Publisher version)

Fulltext (public)

COBSJournal-template_Matzka_et_al_theodolite_test_workshop.pdf
(Publisher version), 263KB

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Citation

Matzka, J., Wenger, T., Krüger, J., Morschhauser, A. (2019): Mechanical and optical tests of Zeiss THEO 010 and 020 nonmagnetic theodolites during the IAGA workshop 2018 at Conrad Observatory. - In: Leonhardt, R., Leichter, B. (Eds.), 18th Workshop an Geomagnetic Observatory Instruments, Data Acquisition and Processing of the International Association of Geomagnetism and Aeronomy (IAGA), Conrad Observatory Journal - COBS Journal: Special issue; 5, 2018, Wien : Zentralanstalt für Meteorologie und Geodynamik, 19.

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_3942904

Abstract

During the IAGA workshop 2018 at Conrad observatory, 30 nonmagnetic theodolites of the Zeiss THEO series were tested for their mechanical and optical properties. Next to an inspection of the instruments, the horizontal circle error (collimation error) and the vertical circle error were determined with the help of a surveyor’s level. While half of the instruments were fine, the others were in need of adjustment or repair. Typical problems requiring repair are sluggish vertical axes and mechanical problems of the coaxial fine-tuning. Typical adjustment problems are the position of the image in the microscope and collimation and vertical circle errors.