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R.A.S., the in correspondent 
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From:
Sir John Herschel
To:
the R.A.S.
Date:
[18 October 1836]
Source of text:
R.A.S.Mem., 10 (1938), 325-36
Summary:

Reports in detail JH's observations of Halley's Comet as observed from the Cape of Good Hope.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
1837-12-16 to 1837-1
Source of text:
R.A.S.M.N., 4 (1838), 121-2
Summary:

Reports observations of the 'remarkable' increase in magnitude of the 'nebulous' star Eta Argus.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[1846]
Source of text:
R.A.S.M.N., 7 (1847), 95-6 inc
Summary:

Reports dimming of Beta Ursae Minoris since ca. 1840. States that it is a slowly variable star.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[1847]
Source of text:
R.A.S.M.N., 8 (1847), 14-15 inc
Summary:

Accepts with thanks J. Henry Griesbach's drawings of solar spots. Encourages others to observe the sun. Suggests the use of photography in recording solar spots. Pledges to give the R.A.S. all JH's drawings of solar spots.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[29 June 1864]
Source of text:
RAS: MSS Add.29 [suppl.]
Summary:

Learned that R.A.S. plans to use aplanatic lenses for solar studies. Submits set of unpublished tables by W. L. Newman [see Newman's 1845-2-18] for calculating radii of such lenses. Refers to work of this kind by Josef Fraunhofer, [G. P.] Bond, K. A. Steinheil, and C. F. Gauss.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[8 August 1864]
Source of text:
R.A.S.M.N., 24 (1864), 220-1
Summary:

Describes a revolving eyepiece that could protect the eye from excess light in solar observation.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[28 May 1866]
Source of text:
Royal Astronomical Society Monthly Notices, 26 (1866), 299-300
Summary:

Reports JH's 1842 observation of a star near Epsilon Coronae, which may be tne new variable star [T Coronae].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[22 December 1868]
Source of text:
R.A.S.M.N., 29 (1869), 84-5
Summary:

There having been reports of changes in the nebula around Eta Argus, JH sends the R.A.S. a letter from JH's son John [see JH's son's 1868-11-23] reporting his observations of that object. JH adds his comments.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[19 May 1870]
Source of text:
R.A.S.M.N., 31 (1871), 228-30
Summary:

Expresses skepticism on the claims made by F. Abbott, observing from Tasmania, of the detection of changes in the Eta Argus nebula. Compares Abbott's drawings with drawings made by JH and and by JH's son John.

Contributor:
John Herschel Project
Collection
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