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Sunspot Catalogue of the Valencia Observatory (1920 – 1928)

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Abstract

A sunspot catalogue was maintained by the Astronomical Observatory of Valencia University (Spain) from 1920 to 1928. Here we present a machine-readable version of this catalogue (OV catalogue or OVc), including a quality-control analysis. Sunspot number (total and hemispheric) and sunspot area series are constructed using this catalogue. The OV catalogue data are compared with other available solar data, demonstrating that the present contribution provides the scientific community with a reliable catalogue of sunspot data.

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Acknowledgements

Support from the Junta de Extremadura (Research Group Grant No. GR10131), from the Ministerio de Economía y Competitividad of the Spanish Government (AYA2011-25945) and from the COST Action ES1005 TOSCA ( http://www.tosca-cost.eu ) is gratefully acknowledged.

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Correspondence to J. M. Vaquero.

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Carrasco, V.M.S., Vaquero, J.M., Aparicio, A.J.P. et al. Sunspot Catalogue of the Valencia Observatory (1920 – 1928). Sol Phys 289, 4351–4364 (2014). https://doi.org/10.1007/s11207-014-0578-7

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  • DOI: https://doi.org/10.1007/s11207-014-0578-7

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