Stonyhurst Disks can be used to determine the latitude and longitude of sunspots (see the sunspot location page for further details). Use the tables below to obtain Stonyhurst disks for various Bo values and disk diameters.

Stonyhurst disks for a diameter of 100 mm

Stonyhurst disks for a diameter of 125 mm

Stonyhurst disks for a diameter of 150 mm

Stonyhurst disks for a diameter of 4 inch

Stonyhurst disks for a diameter of 5 inch

Stonyhurst disks for a diameter of 6 inch

Last updated on 04 May 2007.