Search: Maclear, Thomas in addressee 
Herschel, John in author 
1830-1839::1836 in date 
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Showing 1–20 of 36 items

Herschel11733

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[13 October 1836]
Source of text:
RS:HS 12.95 (C: RS:HS 21.212)
Summary:

Reports on JH's actinometer observations. Explains why he subscribed to 'Col. [Harry] Smith's piece of plate.'

Contributor:
John Herschel Project

Herschel11878

From:
Sir John Herschel
To:
Thomas Maclear
Date:
10] September [1836
Source of text:
RS:HS 12.237
Summary:

Much obliged for F. W. Bessel's zone. Thinks his own extra meridian observations of the comet will be respectable. Feels sure Fearon Fallows could not have approved of the supports of the dome. Has been promised the pleasure of inspecting the expenses of the Observatory. Captain J. E. Alexander and Dr. John Murray will call this morning for a parting cup of tea.

Contributor:
John Herschel Project

Herschel12110

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[31 January 1836]
Source of text:
RS:HS 21.196
Summary:

Sends a list of additional stars to be measured for JH to use as standards.

Contributor:
John Herschel Project

Herschel12111

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[7 February 1836]
Source of text:
RS:HS 21.198
Summary:

About an anomaly in one of JH's lists of observations.

Contributor:
John Herschel Project

Herschel12112

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[21 February 1836]
Source of text:
RS:HS 21.199
Summary:

About the principles whereby the nomenclature of the constellations might be reformed.

Contributor:
John Herschel Project

Herschel12113

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[1836-3-25 or 26]
Source of text:
RS:HS 21.200
Summary:

Has installed his astrometer to help judge star magnitudes; also makes a comparison of barometric observations with those of TM.

Contributor:
John Herschel Project

Herschel12114

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[1836-3-5 to 23]
Source of text:
RS:HS 21.201
Summary:

Has compared TM's observational measurements with those of the Brisbane catalogue, and finds TM's observations to be better; is working on a star photometer.

Contributor:
John Herschel Project

Herschel12115

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[5 March 1836]
Source of text:
RS:HS 21.203
Summary:

JH's observations of the comet [Halley's], together with comments on constellation nomenclature and stellar magnitudes.

Contributor:
John Herschel Project

Herschel12116

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[31 March 1836]
Source of text:
RS:HS 21.204
Summary:

Sending some equipment back and forth, and some astrometer readings.

Contributor:
John Herschel Project

Herschel12117

From:
Sir John Herschel
To:
Thomas Maclear
Date:
21] April [1836
Source of text:
RS:HS 21.205
Summary:

Sends observations of several more standard stars, and of the comet.

Contributor:
John Herschel Project

Herschel12118

From:
Sir John Herschel
To:
Thomas Maclear
Date:
3] September [1836
Source of text:
RS:HS 21.209
Summary:

Sends formulae for dealing with the apparent differences, in viewing the comet and compared star, due to the effects of parallax and refraction.

Contributor:
John Herschel Project

Herschel12119

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[19 September 1836]
Source of text:
RS:HS 21.210
Summary:

Calms TM about not having his comet observations published yet; those published so far are not of much value.

Contributor:
John Herschel Project

Herschel12120

From:
Sir John Herschel
To:
Thomas Maclear
Date:
22] August [1836
Source of text:
RS:HS 21.215
Summary:

A note along with a request from Niccolo Cacciatore for some observations that JH says he cannot make.

Contributor:
John Herschel Project

Herschel12837

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[20 February 1836]
Source of text:
TxU:H/L-0241; Reel 1054 (Cdraft: RS:HS 25.15.2)
Summary:

Having read John Burrow's book, JH proposes procedure for analyzing masses of data from [African] Expedition. Will volunteer to interpolate chronometer errors if TM will undertake computations.

Contributor:
John Herschel Project

Herschel3793

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[22 January 1836]
Source of text:
unknown
Summary:

Finishing his copy of the panorama taken from the summit of Paarl rock. Needs TM's star reductions as soon as possible.

Contributor:
John Herschel Project

Herschel3794

From:
Sir John Herschel
To:
Thomas Maclear
Date:
4] March [1836
Source of text:
unknown
Summary:

Thanks TM for the right ascension reductions. Saw the comet [Halley's] last night, but it was dimmer than before.

Contributor:
John Herschel Project

Herschel3795

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[1836-10]
Source of text:
unknown
Summary:

Asks for TM's barometer and thermometer readings for 20-28 September.

Contributor:
John Herschel Project

Herschel3920

From:
Sir John Herschel
To:
Thomas Maclear
Date:
8] January [1836
Source of text:
unknown
Summary:

Uncertain when they are traveling to Paarl.

Contributor:
John Herschel Project

Herschel3921

From:
Sir John Herschel
To:
Thomas Maclear
Date:
25] January [1836
Source of text:
unknown
Summary:

Invites TM to come see Halley's Comet in JH's large reflector. JH reports his observations of the comet.

Contributor:
John Herschel Project

Herschel3922

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[8 February 1836]
Source of text:
unknown
Summary:

Calculates the location of the comet [Halley's].

Contributor:
John Herschel Project
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