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
Showing 1–2 of 2 items
Seems to JH to be some systematic error in some of RM's observations; JH includes examples.
Notes strengths and weakness of heliometer for observing double stars. Calls it 'laborious, troublesome instrument.'