Search: Herschel, John in correspondent 
Maclear, Thomas in correspondent 
1830-1839::1837 in date 
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Herschel11865

From:
Thomas Maclear
To:
Sir John Herschel
Date:
[1837-11]
Source of text:
RS:HS 12.224
Summary:

Hard at work mapping the polar stars. Rejoices at Dr. Andrew Smith's success. The results of tonight will be delivered by J. K. Gibbs in the morning.

Contributor:
John Herschel Project

Herschel11870

From:
Thomas Maclear
To:
Sir John Herschel
Date:
4] November [1837
Source of text:
RS:HS 12.229
Summary:

Polar region was thick this evening so that very minute stars were invisible. Set C. P. Smyth to the transit and himself at the circle to observe JH's list of stars. Received the spherometer safely. Intends to stake out the base line again on Tuesday. [Andrew?] Sm[y]th's expedition will be a serious undertaking in the Eastern direction.

Contributor:
John Herschel Project

Herschel11880

From:
Thomas Maclear
To:
Sir John Herschel
Date:
12] June [1837
Source of text:
RS:HS 12.239
Summary:

The flood has done much mischief to his baseline; there are still some holes to be filled in. Has written to Col. G. G. Lewis. Hopes to see JH at breakfast on Thursday.

Contributor:
John Herschel Project

Herschel11881

From:
Thomas Maclear
To:
Sir John Herschel
Date:
3] January [1837
Source of text:
RS:HS 12.240
Summary:

Proceedings with the Circle went on as well as expected; fixed the additional microscopes with plaster of paris. Sends the P.M.that contains F. W. Bessel's paper on the repeating circle. Opposition of Mars will require the use of the circle in the last of the present month.

Contributor:
John Herschel Project

Herschel3802

From:
Thomas Maclear
To:
Sir John Herschel
Date:
[21 November 1837]
Source of text:
unknown
Summary:

Asks TM for some trigonometric information regarding a particular set of points.

Contributor:
John Herschel Project

Herschel7408

From:
Thomas Maclear
To:
Sir John Herschel
Date:
24] August [1837
Source of text:
RAS:JH Archive 6/2.34; Reel 8
Summary:

Check proofs, including first announcement of JH's 'Planetary Nebulae.' Instrument inconsistencies produce immense labor for TM and C. P. Smyth. Tempted to omit one-third of readings. Praises Smyth; happy to be rid of William Meadows. Speculates on causes of TM's and JH's headaches. Will propose that Fearon Fallows's observations be published.

Contributor:
John Herschel Project

Herschel7409

From:
Thomas Maclear
To:
Sir John Herschel
Date:
13] October [1837
Source of text:
RAS:JH Archive 6/2.38; Reel 8
Summary:

Problems determining exact times of lunar eclipses. Cites B.A.A.S.Rep. article by T. R. Robinson on change of color. Base line covered by water after recent storm.

Contributor:
John Herschel Project

Herschel7410

From:
Thomas Maclear
To:
Sir John Herschel
Date:
14] October [1837
Source of text:
RAS:JH Archive 6/2.39; Reel 8
Summary:

Compares TM's observations of 'spots' and colors [on lunar surface] to observations by others. At next eclipse, TM will use drawing of moon's face with spots labeled on it. Did JH note occultation? Chronometer is slow.

Contributor:
John Herschel Project

Herschel7420

From:
Thomas Maclear
To:
Sir John Herschel
Date:
[1838 or later]
Source of text:
RAS:JH Archive 7/3.15; Reel 8
Summary:

Gives latitude of 'this observatory' used in reduction of 'Comet stars.' Will accept systematic correction in all data to compensate for differences between TM's and Thomas Henderson's data. Instruments are erratic since telescope was moved. Using transit instrument only for sun, planets, and [reduction of Thomas] Brisbane's stars.

Contributor:
John Herschel Project
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