Search: Herschel, John in correspondent 
Herschel, Caroline Lucretia in correspondent 
Herschel, John in author 
Sorted by:

Showing 4160 of 91 items

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[19 February 1836]
Source of text:
TxU:H/L-0581.2.b; Reel 1058
Summary:

Reports the birth of his fifth child, Alexander Stewart. Has made some excellent observations of Halley's Comet. Asks CH to inform Carl Gauss that JH has not received Gauss's magnetometer nor is JH certain of how to use it.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[8 March 1836]
Source of text:
TxU:H/L-0581.1.b; Reel 1058
Summary:

Is too busy to use Carl Gauss's magnetometer. Viewing Halley's Comet has interrupted JH's sweeps. Reports that Gamma Virginis is a single star in both the 20-ft. reflector and 7-ft. equatorial.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
1836-[8]
Source of text:
TxU:H/L-0581.3.b; Reel 1058
Summary:

Work nearly finished here. Has documented the sixth satellite of Saturn and has seen possibly a seventh.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[3 October 1836]
Source of text:
TxU:H/L-0581.4.b; Reel 1058
Summary:

Confident that 1837 will be his last year in Africa. JH's catalog of nebulae and double stars is nearly complete. Has a series of observations of Halley's Comet from 1836-1-25 to 1836-5-5. Although JH is too busy to undertake any magnetic studies, he has been providing information about Carl Gauss's magnetometer to the new observatory in Bombay. Recalls that Charles Babbage mentioned the 'principle' of Gauss's method 'at least 10 or 12 years' ago.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[10 January 1837]
Source of text:
TxU:H/L-0582.1.a; Reel 1058
Summary:

Reports that he viewed Halley's Comet from 1836-1-25 to 1836-5-10. Now studying sunspots and solar radiation. Comments that the sun has more spots than JH previously thought. Has been busy during the December solstice determining the constant of solar radiation.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 May 1837]
Source of text:
unknown
Summary:

Has decisively mapped Saturn's sixth satellite; doubts, however, that he will ever see the seventh. Asks CH to inform Friedrich Bessel of his observation.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 September 1837]
Source of text:
TxU:H/L-0582.2.a; Reel 1058
Summary:

Eliminated plans to visit Rio de Janeiro on the Herschels' return home, which will enable them to visit Hanover. Notes that JH's rheumatism attacks have interfered with his observations. JH considers his sweeping work finished. Has sent to the R.S.L. the first six hours of JH's 'Southern Catalogue of Nebulae and Double Stars' along with the micrometric measures of 400 southern double stars made with the equatorial.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[16 November 1837]
Source of text:
unknown
Summary:

[Postscript to a letter by Margaret Herschel:] JH notes that he has finished the reduction of the first 9 hours in Right Ascension of his southern nebulae and double stars.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[20 May 1838]
Source of text:
TxU:H/L-0583.1; Reel 1058
Summary:

Herschels safely landed from Africa and in fine spirits.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[6 August 1838]
Source of text:
TxU:H/L-0583.3; Reel 1058
Summary:

Reports a joyous reunion with family and friends.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[2 September 1838]
Source of text:
TxU:H/L-0583.6.b; Reel 1058
Summary:

Copies the inscription on a vase awarded to JH to commemorate his work at Cape Town.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[26 November 1838]
Source of text:
TxU:H/L-0583.7; Reel 1058
Summary:

Impressed with the new President of the R.S.L., Spencer J. A. Compton. Has learned that Carl Gauss was awarded the Copley Medal for his research in terrestrial magnetism.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[31 December 1838]
Source of text:
TxU:H/L-0583.9.b; Reel 1058
Summary:

Sent to CH her diploma from the Royal Irish Academy on account of her election as an honorary member.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[1 March 1839]
Source of text:
TxU:H/L-0584.1; Reel 1058
Summary:

Prepared to send to CH copies of the Index to John Flamsteed.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[26 June 1839]
Source of text:
TxU:H/L-0584.4.b; Reel 1058
Summary:

Has enclosed with the letter 'a letter sketch of the 40 feet [telescope] (as it now stands) made without hands, by Photography.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 August 1839]
Source of text:
TxU:H/L-0584.5.a; Reel 1058
Summary:

The 20-ft. reflecting telescope used at Cape Town was delivered safely to Slough.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[23 October 1839]
Source of text:
TxU:H/L-0584.7; Reel 1058
Summary:

Reports the birth of JH's seventh child, Maria Sophia. Met Adolphus Frederick, the Duke of Cambridge, who asked about CH.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7?] April 1840
Source of text:
TxU:H/L-0585.3; Reel 1058
Summary:

Packing up the 7-ft. and 10-ft. reflecting telescopes for their trip to Collingwood in Hawkhurst in Kent, JH's new home.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
1840-8
Source of text:
TxU:H/L-0585.8.a; Reel 1058
Summary:

Reports that there is no bust of William Herschel at the R.S.L., as JH once believed.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[10 August 1840]
Source of text:
TxU:H/L-0585.7; Reel 1058
Summary:

JH has given away his sweeping telescope to [Johann] Hausmann and the 5-ft. Newtonian reflector to the R.A.S. to be preserved 'long after I and all the little ones are dead and gone.' The skies have been excellent for JH to observe variable stars and to connect the northern with the southern magnitudes. Proved that Alpha Orionis is both a variable star and a periodical star.

Contributor:
John Herschel Project