Lot 369

Mount Wilson Solar Observatory







Auction: 10 June 2009 at 12:00 BST
£563
Description
The sun. Two studies, 1908 and 1921, 23.8 by 18cm and 19 by 24cm respectively, comprising 'B 9. North and South Sun-Spots, September 9, 1908. Ha Hydrogen' and 'B 31. Northwest Quarter of Sun, January 5, 1917, Ha Hydrogen', silver bromide prints, each titled and credited to Mount Wilson Solar Observatory on printed labels on the reverse (2)
Footnote
Note: 'North and South Sun-Spots', taken with the use of George Ellery Hale's Spectrohelioscope, was one of the first photographs taken at the Mount Wilson Observatory.






