Search: Herschel, John in correspondent 
Struve, Wilhelm in correspondent 
1820-1829::1825 in date 
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Herschel2994

From:
Sir John Herschel
To:
Wilhelm Struve
Date:
[24 January 1825]
Source of text:
RS:HS 17.106a (C: RS:HS 20.196)
Summary:

Asks WS for account of the performance of his new [Josef] Fraunhofer telescope. Corroborates WS's double star motion data, except for 70 Ophiuchi, where JH and [James] South find no motion. Asks for observational targets and urges care in WS's observational technique. Mentions WS's intention to undertake celestial zone with [F. W.] Bessel. Describes [Henry] Kater's 'floating collimator.'

Contributor:
John Herschel Project

Herschel2995

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[9 April 1825]
Source of text:
RS:HS 17.107
Summary:

Illegible.

Contributor:
John Herschel Project

Herschel2864

From:
Sir John Herschel
To:
Wilhelm Struve
Date:
[31 May 1825]
Source of text:
RS:HS 20.213
Summary:

Acknowledges receipt of WS's second volume of observations and the new telescope's results. Mentions Caroline Herschel's catalogue of nebulae.

Contributor:
John Herschel Project
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