From:
John Ramage
To:
Sir John Herschel
Date:
[29 May 1826]
Source of text:
RS:HS 14.298
Summary:
Discusses casting and construction of telescope speculae.
Contributor:
John Herschel Project
Showing 1–4 of 4 items
Discusses casting and construction of telescope speculae.
Discusses construction of his 20-foot reflecting telescope, which he modeled after the 40-foot reflector at Slough. Discusses differences of gallery and asks for advice.
Discusses the construction of JR's telescope. Mentions a number of material changes that must be made if it is to be used for sweeping [see JR's 1826-9-30].
Discusses construction of achromatic and reflecting telescopes, and stands for large telescopes. Asks JH to sign a subscription list to raise funds to construct telescope.