Search: Lassell, William in author 
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From:
William Lassell
To:
Mary Somerville
Date:
28 May 1833
Source of text:
MSL 3 / 101, Dep. c. 371, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse
From:
William Lassell
To:
Sir John Herschel
Date:
[10 March 1842]
Source of text:
RS:HS 11.125
Summary:

Sending a description of the observatory he has erected, containing an equatorially mounted Newtonian reflector. Has high opinion of its efficiency. Has detected a sixth star near the trapezium of Orionis.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[29 March 1843]
Source of text:
RS:HS 11.126
Summary:

Sending a letter he has received from a friend regarding a curious observation of the moon. Has seen the comet and encloses diagrams of its position.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[26 August 1846]
Source of text:
RS:HS 11.127
Summary:

Has seen the seventh satellite of Saturn. Encloses diagrams and comments on them.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[28 August 1846]
Source of text:
RS:HS 11.128
Summary:

Was in error when in his last letter he stated he had seen the seventh satellite of Saturn; he has yet to see it.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[7 September 1846]
Source of text:
RS:HS 11.129
Summary:

Details of WL's observations of the seventh satellite of Saturn.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[12 October 1846]
Source of text:
RS:HS 11.130
Summary:

Details of WL's observations of a ring and satellite of U. J. J. Leverrier's planet.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[4 February 1847]
Source of text:
RS:HS 11.131
Summary:

About observations of the seventh satellite of Saturn, and using William Parsons' (3rd Earl of Rosse) 'machine'.

Contributor:
John Herschel Project
From:
William Lassell
To:
H. C. Schumacher
Date:
[6 August 1847]
Source of text:
RS:HS 11.133
Summary:

Details of steps in his discovery of the satellite of Neptune. Gives details of the telescope he is using.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[6 August 1847]
Source of text:
RS:HS 11.132
Summary:

Note to accompany details of WL's observations of the satellite of Neptune. [Details are found in WL's letter to H. C. Schumacher of 1847-8-6.]

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[14 August 1847]
Source of text:
RS:HS 11.134
Summary:

Grateful for JH's Cape observations. Has nothing new to report on the ring of Neptune. Has been troubled with dew on his prism, but has now succeeded in overcoming this difficulty.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[22 January 1848]
Source of text:
RS:HS 11.135
Summary:

Has sent his observations on Saturn and Neptune to the R.A.S. and encloses a copy for JH. Weather has been unsuitable for many observations recently. Has not heard of any observations of a second satellite of Neptune.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[31 January 1848]
Source of text:
RS:HS 11.136
Summary:

Has received a letter from W. C. Bond of the Cambridge Observatory (U.S.A.), who speaks of the satellite of Neptune. Bond also sends details of the stars around Orion. Relates his own work on the specula of telescopes. Intends to submit a paper on this to the R.A.S.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[13 October 1848]
Source of text:
RS:HS 11.137
Summary:

Outlining the apparent controversy between himself and W. C. Bond over the discovery of the satellites.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[14 October 1848]
Source of text:
RS:HS 11.138
Summary:

Further regarding W. C. Bond's discovery of the Neptunian satellites.

Contributor:
John Herschel Project
From:
William Lassell
To:
George Biddell Airy
Date:
[14 August 1850]
Source of text:
RS:HS 11.140
Summary:

Believes he has discovered a second satellite of Neptune; gives readings.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[3 November 1851]
Source of text:
RS:HS 11.141
Summary:

Has discovered two new satellites of Uranus; gives observations. Would JH suggest names for them.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[27 November 1851]
Source of text:
RS:HS 11.142
Summary:

Giving his recent observations of the satellites of Uranus. Has not detected more than four satellites.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[24 March 1852]
Source of text:
RS:HS 11.143
Summary:

Is well satisfied with the names JH has suggested for the satellites, but wonders whether the continental astronomers will accept them. Is puzzled by the orbits of two satellites.

Contributor:
John Herschel Project
From:
William Lassell
To:
Sir John Herschel
Date:
[25 March 1852]
Source of text:
RS:HS 11.144
Summary:

Found he had made an error in his letter of yesterday. Encloses an amended table.

Contributor:
John Herschel Project