Solar
The Sunspot Drawers of Locarno: Ninety Years of a Daily Record
At the Specola Solare Ticinese above Locarno, observers have drawn the Sun's surface by hand on most clear days since 1957. Iolanda Ferro on what the practice preserves.
Tag
Solar
At the Specola Solare Ticinese above Locarno, observers have drawn the Sun's surface by hand on most clear days since 1957. Iolanda Ferro on what the practice preserves.
Solar
A modest 60mm refractor, properly filtered, will draw a sunspot group with surprising honesty. Iolanda Ferro on a year of daytime observing from a balcony in Naples.