Sunspot Catalogue of the Valencia Observatory (1920-1928)

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 catalog or OVc), including a quality control analysis. Sunspot number (total and hemispheric) and sunspot area series are constructed using this catalogue. The OV catalog's data are compared with other available solar data, demonstrating that the present contribution provides the scientific community with a reliable catalogue of sunspot data.

20 pages, 12 figures, accepted for publication in Solar Physics

References in corpus (9)

• Historical Sunspot Observations: A Review
• Sunspot positions and sizes for 1825-1867 from the observations by Samuel Heinrich Schwabe
• The butterfly diagram in the 18th century
• Revisited sunspot data: A new scenario for the onset of the Maunder minimum
• The north-south asymmetry of soft X-ray flare index during solar cycles 21, 22 and 23
• Secular variation of hemispheric phase differences in the solar cycle
• Inconsistency of the Wolf sunspot number series around 1848
• Forty two years counting spots: solar observations by D. E. Hadden during 1890-1931 revisited
• The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions

Cited by in corpus (9)

• A Revised Collection of Sunspot Group Numbers
• A Normalized Sunspot-Area Series Starting in 1832: an Update
• A Curious History of Sunspot Penumbrae: An Update
• Sunspot Catalogue of the Observatory of the University of Coimbra (1929-1941)
• Equivalence relations between the Cortie and Zurich sunspot group morphological classifications
• A Sunspot Catalog for the Period 1952-1986 from Observations Made at the Madrid Astronomical Observatory
• Eric Strach: four decades of detailed synoptic solar observations (1969-2008)
• The solar rotation in the period 1853-1870 from the sunspot catalogues of Carrington, Peters, and de la Rue
• Testing the accuracy of Coimbra Astronomical Observatory solar filament historical series (1929-1941)