Abstract
Conventional magnetometers of the Bobrov type were equipped with photoelectric converters and feedback loops having a feedback factor of 1000. Tests made at the Belsk and Nurmijärvi Observatories demonstrated that: (a) the long-term stability of the base-line values was the same or better than that in conventional magnetometers (e.g. at Nurmijärvi), i.e. the changes were less than 0.5 nT a month; (b) the short-term stability was the same as in the conventional magnetometers; (c) the reliability of the instrument was good, the time between failures in the instruments tested being more than a year; (d) the same instruments can be used simultaneously for normal recording and for recording magnetic pulsations.
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References
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© 1984 D. Reidel Publishing Company
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Jankowski, J., Marianiuk, J., Ruta, A., Sucksdorff, C., Kivinen, M. (1984). Long-Term Stability of a Torque-Balance Variometer with Photoelectric Converters in Observatory Practice. In: Stuart, W.F. (eds) Geomagnetic and Observatory and Survey Practice. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5283-6_17
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DOI: https://doi.org/10.1007/978-94-009-5283-6_17
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8833-6
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