Calotype print of Nasmyth's 20-inch reflecting telescope, 1866

One of six calotype prints, showing a 20-inch reflecting telescope with speculum mirror [Nasmyth focus] on a modified altazimuth mounting [see 1933-21] built by James Nasmyth at his Patricroft works, Manchester. Taken by him at of his large house, 'Hammerhurst' near Penshurst in Kent and dated 29th May 1866.

Collection

Science Museum

Inventory Number

3161567

Title

Calotype print of Nasmyth's 20-inch reflecting telescope, 1866

Object Type

PhysicalObject

Measurements

- overall: 1.5 x 360 x 340 mm