From:
Alexander Rogers
To:
Sir John Herschel
Date:
[3 April 1829]
Source of text:
RS:HS 14.409
Summary:
Anxious to hear the opinion of his telescope. Notices best resolution with a 3.5-inch aperture. Also, distinctness is best with correcting lenses in certain diametric position.
Contributor:
John Herschel Project