RGO Archives/RGO 6 contains:
<-- See earlier
169	Astronomical methods
170	Astronomical methods and instruments
171	Astronomical methods and instruments
172	Astronomical methods and instruments
173	Astronomical methods and instruments
174	Astronomical methods and instruments
175	Astronomical methods and instruments
176	Astronomical methods and instruments
177	Astronomical methods and instruments
178	Correspondence on the Edinburgh Equatorial
179	Papers on instruments
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Papers of George Airy

Title	Astronomical methods and instruments
Reference	RGO 6/174 (former reference: L4/18)
Covering Dates	1874–1875
Extent and Medium	1 box

Content and context

Correspondence on new inventions and techniques, as well as trials of existing equipment, including the Greenwich spectroscope (with plans, drawings and suggestions), the transit circle, the altazimuth, the double edge micrometer and others. The correspondents include J.A. Broun, W. Huggins, W.H.M. Christie and W. De La Rue. There are also scales for old micrometers, a water pressure card, sketches for eyepieces and two photographs of a German heliometer.

Further information

Indexed

Index Terms

Christie, Sir William Henry Mahoney (1845-1922) Knight, astronomer

Rue, Warren De La (1815-1889) chemist and astronomer

Huggins, Sir William (1824-1910) Knight, astronomer

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