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Clark, Alvan in correspondent 
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From:
Alvan Clark
To:
Sir John Herschel
Date:
[28 May 1852]
Source of text:
RS:HS 5.341
Summary:

Has a copy of JH's book on astronomy, which AC values. Has been carrying out experiments with the grinding of object glasses. Remarks on various points relating to telescopes. Intends to search for double stars.

Contributor:
John Herschel Project
From:
Alvan Clark
To:
Sir John Herschel
Date:
[7 June 1852]
Source of text:
RS:HS 5.342
Summary:

Has found an error in the printed list he sent recently. Wonders if a certain star listed has ever been observed as a double.

Contributor:
John Herschel Project
Collection
Document type
Transcription available