Dun Echt Heliometer
Also known as the Lord Lindsay Heliometer and 4-inch Heliometer.
First systematic measurement of stellar parallaxes. The result was “outstandingly successful”.
Sir David Gill purchased this instrument privately from Lord Lindsay of Dun Echt and with this instrument embarked upon the first systematic measurement of stellar parallaxes.
- Lord Lindsay
- David Gill (1880 -?)
- Dun Echt
- Cape Observatory 1880 (December) –
Royal Observatory, Edinburgh
Type: Reflector / Refractor
Mirror / Lens:
Mounting: Later used as mounting for the 18-inch telescope.
Building: Housed in a dome on the North-East side of the Cape Observatory. This building was later demolished and a new Grubb dome built for the Cox Hargreaves 18-inch telescope.[Koorts – British, pp. 52 -53.]
- Koorts, W.: The 1882 transit of Venus: The British expeditions to South Africa; MNASSA April 2004, Vol. 63 nos. 3 & 4, pp. 34 – 57.
- Moore, P. & Collins, P., Astronomy in Southern Africa, p. 74 -75. (General Source)