The solar rotation in the period 1853-1870 from the sunspot catalogues of Carrington, Peters, and de la Rue

Ricard Casas, José M. Vaquero

R. C. Carrington, C. H. F. Peters, and W. de la Rue observed the sunspots in the second half of the 19th century, determining their heliographic positions between 1853 and 1870, be…