Search: Herschel, John in addressee 
Struve, Wilhelm in author 
1820-1829 in date 
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Herschel14839

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
5-5-1822
Source of text:
RS:HS 17.103
Summary:

WS asks that his name be given to the Astronomical Society and attaches a copy of observation of double stars made at Dorpat. WS also inquires about copies he had previously sent to William Herschel and to the R.S.L., offering to replace them if they have been lost.

Contributor:
John Herschel Project

Herschel2992

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[15 July 1823]
Source of text:
RS:HS 17.104
Summary:

With the departure of [Otto von] Kotzebue, WS takes the opportunity to send JH volumes of Dorpat observations. Requests notification if volumes do not arrive.

Contributor:
John Herschel Project

Herschel2993

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[11 August 1823]
Source of text:
RS:HS 17.105
Summary:

Thanks JH for having been nominated to England's Astronomical Society. Notes that his results on double stars agree with those of JH and James South. Eagerly awaits new 14-foot achromatic telescope.

Contributor:
John Herschel Project

Herschel2995

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[9 April 1825]
Source of text:
RS:HS 17.107
Summary:

Illegible.

Contributor:
John Herschel Project

Herschel2996

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[3 May 1826]
Source of text:
RS:HS 17.108
Summary:

Offers to participate in determining stellar parallaxes by finding the angle position of double stars. Apprises Henry Kater that he has never seen Saturn's rings separated. Includes micrometer measurements of Saturn and Jupiter.

Contributor:
John Herschel Project

Herschel2997

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[4 November 1826]
Source of text:
RS:HS 17.109
Summary:

Mentions a four month absence from Dorpat. Commends [James] South on his work on double stars yet states that South's distances for nearby stars are too large. Considers his measurements, previous to his [Josef] Fraunhofer telescope, significant, even if South refuses to accept them. Thanks JH for the difference in the longitudinal measurements between Paris and Greenwich.

Contributor:
John Herschel Project

Herschel2998

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[9 December 1826]
Source of text:
RS:HS 17.110
Summary:

Interested in JH's catalogue of dimmer double stars. Worries about determining parallax of very close stars. Points out mistake in JH's formula for determining 'the maxima and minima of the position angles.' Informs JH of German translation of William Herschel's writings, Wilhelm Herschels sämmtliche Schriften.

Contributor:
John Herschel Project

Herschel3001

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[19 July 1827]
Source of text:
RS:HS 17.112
Summary:

Announces eight copies of his Catalogus novus stellarum duplicium et multiplicium are being sent. Has delegated some work on double stars to his aid [E. W.] Preuß.

Contributor:
John Herschel Project

Herschel3003

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[22 December 1827]
Source of text:
RS:HS 17.114
Summary:

Surprised and grateful for JH's encouragement concerning his Stellarum duplicium. Informs JH that the observatory survived the fire at Abo. The university is moving to Helsingfors, Finland. [F. W. A.] Argelander will remain and is working on determining delineations of the foundation stars.

Contributor:
John Herschel Project

Herschel3004

From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[6 May 1828]
Source of text:
RS:HS 17.115
Summary:

Accepts JH's extension of Class I double stars. Comments on comparison of these and suggests comparison of respective scales might be mutually useful. Includes continuation of work on micrometer measurements of Saturn. Notices strange eccentricity of Saturn's rings. Is considering comparing his degree-measurements with Finland and Lapland.

Contributor:
John Herschel Project
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