Telescope

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          Telescope

            92 Archival description results for Telescope

            17 results directly related Exclude narrower terms

            The letter is from L. Robertson to Gilbert T. Walker, meteorological reporter to the government of India, informing that there is no objection from Michie Smith to go to Hyderabad, and it further states that as the visit is private purpose, the Nawab has to pay for travelling allowance fee and no other bills.

            Walker, Gilbert T.
            IND-IIA-F203-I04 · Item · 19-06-1919
            Part of Letters related to Prisms

            This letter from J. Evershed to the Director-General of Stores regarding the 30-degree prism ordered for Kodaikanal M6145 Hilger, which should not be sent out for trial as judged by Mr Shackleton, the prism does not meet the requirements of the specification and should be rejected.

            Evershed, John

            This letter was reply to letter dated Oct. 29 about lenses. He was requesting 15-inch, 12-inch, 4-inch and a lens of about 7 ft. focus lenses to be send from Nizamaiah Observatory to Kodaikanal Road Station mentioning the purposes for which it requires. In addition the item has the telegram messages written by Evershed to Pocock and vice versa.

            Evershed, John
            IND-IIA-F206-I05 · Item · 24-07-1922
            Part of Correspondence related to Nizamiah Observatory during 1917-1923

            This letter is from John Evershed to Mr Bhaskaran about the instructions to pack the 15-inch lens in a large case. He also mentioned that he had put castor oil between the component lenses to keep them perfectly adjusted and saved about 8 percent of light otherwise lost by reflection.

            Strange, W. L.
            IND-IIA-F189-I11 · Item · 21-02-1911
            Part of Correspondence from Poona and other Observatory

            John Evershed, Director of Kodaikanal & Madras Observatory, wrote this letter to Gilbert T. Walker, assuming they might be getting the prism from Poona Observatory. He mentioned sending correspondence about the new micrometer and a specification. He devised another much simpler method of reducing moonlight comparable with 1st magnitude stars, which seems quite successful. He also proposed purchasing a Hartmann machine from private funds to save time and trouble.

            Walker, Gilbert T.