From:
Achille Brachet
To:
Sir John Herschel
Date:
1855-11
Source of text:
RS:HS 4.211
Summary:
On telescopes and their fittings.
Contributor:
John Herschel Project
On telescopes and their fittings.
Concerning telescopes and their fittings, and queries relative to them. Intends to publish a work on them.
Sends a few explanations of G. B. Amici's third and sixth series microscopes.
Was pleased to receive his letter. Further concerning G. B. Amici's microscopes.
Answer to his queries on telescopes and rays of light. Is sorry he rejects Joseph Fraunhofer's fixed lenses.