Heliostatic mounting
- Made:
- 1795-1805
Heliostatic mounting, hinge bracket with square plate with rotating aperture, mounted with oval, flat speculum mirror. Used by William Herschel in the first investigations of the solar spectrum beyond the visible region, when he discovered infrared radiation (See note)
Details
- Category:
- Optics
- Object Number:
- 1876-566
- Materials:
- copper (alloy), brass (copper, zinc alloy), iron, bronze (copper, tin alloy), speculum metal and wood (unidentified)
- Measurements:
-
overall: 165 mm x 175 mm x 150 mm, , 2.35kg
- type:
- mounting
- credit:
- Mr. J. Herschel-Shorland.