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Herschel, John in correspondent 
Encke, Johann Franz in correspondent 
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From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[11 September 1824]
Source of text:
RS:HS 7.82
Summary:

Thanks for his election to the Astronomical Society and for the award of its gold medal. Sends a proof of a new chart of the moon by W. G. Lohrmann. Sends two papers of his own. Hopes to send notice of John Pond's comet orbit in 1825.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[22 October 1824]
Source of text:
RS:HS 7.83
Summary:

Finds no errors in JH's letter on the parallax of Mars. Sends his own calculations. Has not found the barometrical readings JH requested.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[2 March 1826]
Source of text:
RS:HS 7.84
Summary:

Berlin Academy plans a new Astronomical Chart. Thanks for JH's work on the double stars. Will see he has changed his address.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[29 April 1826]
Source of text:
AdWDDR II-VII, 5
Summary:

Asks questions about the prospectus [see JE's 1826-3-2] prepared by the Berlin Royal Academy for a map of the heavens. Asks JE to send JH a copy of [K. L.] Harding's star atlas.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[30 May 1826]
Source of text:
TxU:H/M-0180; Reel 1087
Summary:

Will send JH some barometric observations; describes the barometers with which the observations were made.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[23 July 1826]
Source of text:
AdWDDR II-VII, 5
Summary:

Reports on interest at the Astronomical Society, especially of [Thomas J.] Hussey, in the plan of the Berlin Academy for a new star chart. JH cannot participate due to JH's commitment to re-examine his father's nebulae, which requires that JH reside far from London.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[16 December 1826]
Source of text:
RS:HS 7.85
Summary:

Regrets he has taken so long to answer his letter. Gives reasons why the Commission does not allocate the same zone to two astronomers. Readings of J. Grooby and T. J. Hussey. Thanks for JH's work. J. E. Bode's work will be continued.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
2] February [1827
Source of text:
AdWDDR II-VII, 5
Summary:

Pleased that JE will continue the Berlin Ephemeris. Makes various recommendations regarding it. Hopes that someone will reduce Thomas Brisbane's observations of southern heavens.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[8 June 1828]
Source of text:
RS:HS 7.86
Summary:

Sending the first volume of his Ephemerides for the Astronomical Society, also for Francis Baily and W. H. Smyth. Comments on various aspects of the Ephemerides. Thanks for JH's excellent work on Light.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[21 November 1828]
Source of text:
AdWDDR II-VII, 5
Summary:

Informs JE that the R.S.L. is awarding JE a Royal Medal for JE's work on Encke's Comet.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[24 February 1830]
Source of text:
RS:HS 7.87
Summary:

Is carrying out a study of double stars, comments on some readings, and would welcome any of JH's observations. Is planning to build up the library commenced by J. E. Bode at the Observatory. The chart of T. J. Hussey is being engraved.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[19 March 1830]
Source of text:
RS:HS 7.88 & 21.63
Summary:

Thanks for his letter, which had been forwarded to his old address. Is pleased he intends working on double stars, though 70 Ophiuchi may prove difficult. Will send some of his own readings for double stars. Like him, he is astonished at the acrimony of the attack on Thomas Young and the Nautical Almanac.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[8 September 1833]
Source of text:
RS:HS 7.89
Summary:

Has been informed that JH will be going to the Cape. Comments on JH's information on double stars, and on a passage in one of his memoirs. Regarding JH's Prelim Discourse. Work of Fearon Fallows and Thomas Henderson at the Cape.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[25 October 1833]
Source of text:
AdWDDR Encke 49
Summary:

Hopes JE will write to JH at Cape. Responds to JE's comments on JH's method of dealing with double stars. Thanks for generous comments on JH's Prelim. Discourse.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[21 April 1835]
Source of text:
RS:HS 7.90
Summary:

Sending his observations of the recent comet. JH's journey has aroused great interest in Germany. Taking over the Observatory and expecting a visit from F. W. Bessel. Wilhelm Struve has planned a new observatory for St. Petersburg. Has met astronomer Manuel Johnson from St. Helena. C. F. Gauss has produced a method of observing the magnetic needle.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[17 January 1837]
Source of text:
AdWDDR Encke 49 (C: RS:HS 25.5.5)
Summary:

Tried unsuccessfully to observe Encke's Comet; succeeded in observing Halley's Comet, which JH discusses. Mentions JH's graphical method of treating orbits of double stars, JH's plans to return to England, moon maps, and sunspots.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[9 March 1839]
Source of text:
RS:HS 7.91
Summary:

JH has been elected to the Prussian Academy of Science; comments on JE's astronomical observations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[24 March 1839]
Source of text:
AdWDDR Encke 49
Summary:

Asks JE to express JH's gratitude to the Royal Academy of Berlin for electing JH a foreign member. Discusses JE's observations of divisions in the ring of Saturn, JH's sightings of Saturn's satellites, the British Antarctic expedition, and comets.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[18 June 1839]
Source of text:
AdWDDR Encke 49
Summary:

Asks if JE or the Academy of Sciences wish to participate in the British plan to make worldwide magnetic observations.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[20 March 1840]
Source of text:
RS:HS 7.92
Summary:

Comments extensively on the orbits of recent comets.

Contributor:
John Herschel Project