From:
Sir John Herschel
To:
George Biddell Airy
Date:
1847-10-1 or earlier
Source of text:
RGO 6.368.682
Summary:
About observing stars with the transit circle, and timing the annulus [of an eclipse?].
Contributor:
John Herschel Project
About observing stars with the transit circle, and timing the annulus [of an eclipse?].
Was too cloudy to observe the eclipse; very worried about the health of Thomas Maclear.