The sunspot observations by Samuel Heinrich Schwabe

Abstract

A long time-series of sunspot observations is preserved from Samuel Heinrich Schwabe who made notes and drawings of sunspots from 1825-1867. Schwabe's observing records are preserved in the manuscript archives of the Royal Astronomical Society, London. The drawings have now been digitized for future measurements of sunspot positions and sizes. The present work gives an inventory and evaluation of the images obtained from the log books of Schwabe. The total number of full-disk drawings of the sun with spots is 8486, the number of additional verbal reports on sunspots is 3699. There are also 31 reports about possible aurorae.

10 pages, 6 figures

Cited by in corpus (17)

• Revisiting the Sunspot Number
• The new Sunspot Number: assembling all corrections
• Sunspot positions and sizes for 1825-1867 from the observations by Samuel Heinrich Schwabe
• Temporal and Spatial Evolutions of a Large Sunspot Group and Great Auroral Storms around the Carrington Event in 1859
• Sunspot areas and tilt angles for solar cycles 7-10
• Digitization of sunspot drawings by Spörer made in 1861-1894
• Iwahashi Zenbei's Sunspot Drawings in 1793 in Japan
• The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions
• Sunspot group tilt angle measurements from historical observations
• Revisiting Kunitomo's Sunspot Drawings during 1835-1836 in Japan
• Spatial-temporal forecasting the sunspot diagram
• Sunspot Drawings by Japanese Official Astronomers in 1749-1750
• Scale Transfer in 1849 : Heinrich Schwabe to Rudolf Wolf
• A modern reconstruction of Carrington's observations (1853-1861)
• A Transit of Venus Possibly Misinterpreted as an Unaided-Eye Sunspot Observation in China on 9 December 1874
• The solar rotation in the period 1853-1870 from the sunspot catalogues of Carrington, Peters, and de la Rue
• Historical observations of STEVE