Search: Bessel, Friedrich Wilhelm in correspondent 
Herschel, John in correspondent 
1830-1839::1838::10 in date 
letter in document-type 
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Herschel5581

From:
Friedrich Wilhelm Bessel
To:
Sir John Herschel
Date:
[9 October 1838]
Source of text:
RS:HS 4.71
Summary:

Announces the measurement of the annual parallax of 61 Cygni.

Contributor:
John Herschel Project

Herschel8535

From:
Sir John Herschel
To:
Friedrich Wilhelm Bessel
Date:
[24 October 1838]
Source of text:
AdWDDR Bessel 225 (C: RS:HS 21.265)
Summary:

Thanks FB for letter in which FB announces the discovery of annual stellar parallax; JH questions whether effects of temperature have been adequately considered.

Contributor:
John Herschel Project
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