Search: 1820-1829 in date 
Schumacher, Heinrich Christian in author 
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From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[17 April 1821]
Source of text:
RS:HS 15.367
Summary:

Thanks for honor conferred by Astronomical Society. Mentions [F. W.] Bessel's paper on the 4th satellite of Saturn. Calculated tables of apparent places of 45 stars, which HS plans to publish annually.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[25 June 1821]
Source of text:
RS:HS 15.368
Summary:

Sends invitation to participate in an astronomical journal. Asks JH to forward letter to [F.] Fallows at the Cape of Good Hope. Mentions [Thomas] Young's plans to travel. Requests that JH forward letters to [W. H.] Wollaston, [John] Brinkley, [David] Brewster, and [Henry] Kater. Encloses announcement of founding of Astronomische Abhandlungen and of Astronomische Nachrichten.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[5 October 1821]
Source of text:
RS:HS 15.369
Summary:

Thanks for forwarding notice on journal to [F.] Fallows. Hopes to use the longitudinal differences of English observations to improve observations.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[8 August 1823]
Source of text:
RS:HS 15.370
Summary:

[J. W. A.] Pfaff plans to publish a translation and edition of all William Herschel's papers. Requests a catalogue of those papers and permission to publish a biography of his later years.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[1823-10 or earlier]
Source of text:
RS:HS 19.10
Summary:

Please forward biography of WH and a list of WH's papers to J. W. A. Pfaff, who plans to translate William Herschel's works into German.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[22 November 1823]
Source of text:
RS:HS 15.371
Summary:

Thanks for forwarded essay on physical astronomy. Remarks about method for precisely determining the power of a telescope. Has [C. L.] Harding's celestial atlas. Wanted to dedicate book to Astronomical Society, but asks privately whether permission is necessary.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[20 January 1824]
Source of text:
RS:HS 15.372
Summary:

Will forward Astronomische Nachrichten to JH and Astronomical Society. Comments on quality of [Joseph] Fraunhofer's micrometer, which has only the wires illuminated. [C. F.] Gauss uses a theodolite to determine the angle of the telescope.

Contributor:
John Herschel Project
From:
Heinrich Christian Schumacher
To:
Sir John Herschel
Date:
[30 March 1826]
Source of text:
RS:HS 15.373
Summary:

Announces a new step to all astronomers toward understanding the solar system due to work of [Thomas] Clausen of the Altona observatory. Clausen recognized that the comet discovered by Biela was the same as that of 1805 and 1772. HS gives details of circumstances.

Contributor:
John Herschel Project