Search: Herschel, John in correspondent 
Airy, George Biddell in correspondent 
1830-1839::1839::11 in date 
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Herschel4696

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[26 November 1839]
Source of text:
RS:HS 1.85
Summary:

Double image micrometer has arrived; limitations and use of it. Wants list of stars for regular observations.

Contributor:
John Herschel Project

Herschel58

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[29 November 1839]
Source of text:
RGO 6.368.629 (ACCS RS:HS 25.5.19)
Summary:

About astronomical matters, such as parallax and variable stars.

Contributor:
John Herschel Project
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