Search: John Herschel Project in contributor 
Herschel, John in correspondent 
Littrow, Joseph Johann in correspondent 
1820-1829::1821 in date 
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Herschel8195

From:
Sir John Herschel
To:
Joseph Johann Littrow
Date:
[11 December 1821]
Source of text:
RS:HS 19.8
Summary:

JL was elected associate of Astronomical Society. Received JL's books and papers. Will send Society's Transactions. John Pond gave permission to test Robert Molyneux's clock at Royal Observatory. Questions F. G. W. Struve's transit determinations of double stars. Pond discovered errors in Greenwich transit instrument and places little dependence on its observations since late 1819. Sends John Brinkley's analysis [of April 1821 comet observed by Basil Hall in southern hemisphere]. Asks about Halley's Comet and parallax. Wants information on object glasses of 6-inch diameter or greater. Requests copy of JL's annual published observations.

Contributor:
John Herschel Project

Herschel11326

From:
Joseph Johann Littrow
To:
Sir John Herschel
Date:
[16 May 1821]
Source of text:
RS:HS 11.232
Summary:

Welcomes astronomical correspondence. Is grateful for having his name proposed as a member of the Astronomical Society. Comments on the work of the Observatory. Would like the memoir of Edward Troughton.

Contributor:
John Herschel Project

Herschel11327

From:
Joseph Johann Littrow
To:
Sir John Herschel
Date:
[26 June 1821]
Source of text:
RS:HS 11.233
Summary:

Sending his book on Theoretical and Practical Astronomy. Also sends books for Thomas Catton. Comments on some of the varying observations made at observatories.

Contributor:
John Herschel Project
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