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[en] [Gutenberg 53542] • On the Construction of a Silvered Glass Telescope / Fifteen and a half inches in aperture, and its use in celestial photography
Draper, Henry
![[Gutenberg 53542] • On the Construction of a Silvered Glass Telescope / Fifteen and a half inches in aperture, and its use in celestial photography](/cover/rrbcuVcr4dMdon_c/small/[Gutenberg%2053542]%20%e2%80%a2%20On%20the%20Construction%20of%20a%20Silvered%20Glass%20Telescope%20/%20Fifteen%20and%20a%20half%20inches%20in%20aperture,%20and%20its%20use%20in%20celestial%20photography.jpg)