Search: Herschel, John in correspondent 
John Herschel Project in contributor 
1840-1849::1842::09::01 in date 
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Herschel6667

From:
J[oseph] Cranch
To:
Sir John Herschel
Date:
[1 September 1842]
Source of text:
RS:HS 5.370
Summary:

Would like JH's views on the suitabilities of the various makes of telescopes for their observatory.

Contributor:
John Herschel Project

Herschel6102

From:
Sir John Herschel
To:
Francis Baily
Date:
[1 September 1842]
Source of text:
RS:HS 3.229 (C: RS:HS 25.8.47)
Summary:

Has sent the papers on the eclipse to G. B. Airy.

Contributor:
John Herschel Project

Herschel279

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1 September 1842]
Source of text:
RGO 6.112.75 (ACCS: RS:HS 25.6.11)
Summary:

About eclipse observations of 1842, together with JH's speculations about the existence of an atmosphere around the sun. Enclosed is an eclipse drawing by Francis Baily.

Contributor:
John Herschel Project

Herschel6668

From:
Sir John Herschel
To:
J[oseph] Cranch
Date:
[1842-9-1 or later]
Source of text:
RS:HS 5.371 (C: RS:HS 25.13.18)
Summary:

Does not feel qualified to judge the merits of the various makes of telescopes. Suggests that the Astronomer Royal may be able to help or one of the other observatories.

Contributor:
John Herschel Project

Herschel3806

From:
Sir John Herschel
To:
Robert Hunt
Date:
1842-9
Source of text:
George Eastman House, 8.17 (C: RS:HS 22.133)
Summary:

Thanks for RH's paper on mineralogy. JH has explored use of mercury together with iron in photography.

Contributor:
John Herschel Project
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