Search: Herschel, John in correspondent 
Main, Robert in correspondent 
1860-1869 in date 
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Herschel12135

From:
Sir John Herschel
To:
Robert Main
Date:
[17 October 1861]
Source of text:
RS:HS 23.342
Summary:

Thanks for the receipt of the Radcliffe catalogue of stars, but wishes observations had been equatorial rather than circumpolar.

Contributor:
John Herschel Project

Herschel11916

From:
Robert Main
To:
Sir John Herschel
Date:
[21 October 1861]
Source of text:
RS:HS 12.278
Summary:

Is obliged for JH's letter acknowledging the receipt of the Radcliffe Catalogue; regrets the delay and will inquire into the cause. Has purchased R. C. Carrington's transit circle for the Radcliffe and would welcome JH's advice as to its employment.

Contributor:
John Herschel Project

Herschel12136

From:
Sir John Herschel
To:
Robert Main
Date:
[25 October 1861]
Source of text:
RS:HS 23.344
Summary:

Suggests an observational program for RM's newly purchased transit circle [see RM's 1861-10-21].

Contributor:
John Herschel Project

Herschel11917

From:
Robert Main
To:
Sir John Herschel
Date:
[29 January 1863]
Source of text:
RS:HS 12.279
Summary:

Is pleased that the Government have put Sir Thomas Maclear on the Civil list. Has read JH's paper on atoms with much interest and amusement. Hopes that JH will call at the Observatory when in Oxford. Finds the R. C. Carrington transit circle a valuable instrument. Comments on his observations.

Contributor:
John Herschel Project

Herschel12138

From:
Sir John Herschel
To:
Robert Main
Date:
[19 September 1868]
Source of text:
RS:HS 24.227
Summary:

Thanks RM for the double star observations he has sent.

Contributor:
John Herschel Project

Herschel11918

From:
Robert Main
To:
Sir John Herschel
Date:
[21 September 1868]
Source of text:
RS:HS 12.280
Summary:

Comments on double star observations and some papers on the subject.

Contributor:
John Herschel Project

Herschel12139

From:
Sir John Herschel
To:
Robert Main
Date:
[29 September 1868]
Source of text:
RS:HS 24.229
Summary:

Sends RM a copy of Angelo Secchi's double star observations pointing to a very large number of calculation errors.

Contributor:
John Herschel Project

Herschel11919

From:
Robert Main
To:
Sir John Herschel
Date:
[30 September 1868]
Source of text:
RS:HS 12.281
Summary:

About the location of several different sets of double star observations.

Contributor:
John Herschel Project

Herschel11920

From:
Robert Main
To:
Sir John Herschel
Date:
[1 October 1868]
Source of text:
RS:HS 12.282
Summary:

Comments on the quality of some of the double star observations in print.

Contributor:
John Herschel Project

Herschel12140

From:
Sir John Herschel
To:
Robert Main
Date:
[24 November 1868]
Source of text:
RS:HS 24.240
Summary:

Seems to JH to be some systematic error in some of RM's observations; JH includes examples.

Contributor:
John Herschel Project

Herschel7761

From:
Robert Main
To:
Sir John Herschel
Date:
[28 November 1868]
Source of text:
RAS:JH Archive 14/3.17; Reel 11
Summary:

Notes strengths and weakness of heliometer for observing double stars. Calls it 'laborious, troublesome instrument.'

Contributor:
John Herschel Project

Herschel11921

From:
Robert Main
To:
Sir John Herschel
Date:
[26 January 1869]
Source of text:
RS:HS 12.283
Summary:

Offers to send on to JH any notices of double star observations that he receives.

Contributor:
John Herschel Project

Herschel12141

From:
Sir John Herschel
To:
Robert Main
Date:
[30 January 1869]
Source of text:
RS:HS 24.248
Summary:

Thanks RM for his offer [see RM's 1869-1-26]; wishes astronomers would develop an accepted system of indicating the quality of observations.

Contributor:
John Herschel Project
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