Search: Herschel, John in correspondent 
Airy, George Biddell in correspondent 
1830-1839::1830::05 in date 
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Herschel4658

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[23 May 1830]
Source of text:
RS:HS 1.42
Summary:

Wants JH's views on a 20-foot reflector. Inviting him to Cambridge. With this letter he encloses Volume 2 of the Cambridge Observatory's Observations and Lectures in Optics.

Contributor:
John Herschel Project

Herschel608

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 May 1830]
Source of text:
RGO 6.803.137
Summary:

About the prices of telescope mirrors, and specifically the one of T. J. Hussey; recommends use of certain stars to test the optical quality of the mirror.

Contributor:
John Herschel Project
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