Solar observation

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          Solar observation

            36 Archival description results for Solar observation

            19 results directly related Exclude narrower terms

            This letter was an acknowledgement for sending pump and bell jar. Evershed mentioned about getting the beautiful series of plates of the Spectrum of the iron arc in air and the centre of Sun's disk. He has written about reproduction of prominence photos the sample of work done by the Roorkee Coy., is suitable the screen used being very fine.

            Evershed, John
            IND-IIA-F198-I03 · Item · 02-04-1912
            Part of Queries Sent to Various Observatories from 1906 to 1923

            This letter is a reply regarding the sun's entry into Aries from the Director of Kodaikanal and Madras Observatories to Pirojshaw H Daste. He states that the sun does not enter the constellation of Aries on March 21; it is called the sign of Aries on or about the date, and this entry coincides with the spring equinox. The date of entry into the constellation Aries slowly changes.

            Daste, Pirojshaw H.
            IND-IIA-F198-I02 · Item · 27-12-1912
            Part of Queries Sent to Various Observatories from 1906 to 1923

            This is a Letter from Pirojshaw H Dasteer to the Director of Kodaikanal and Madras Observatories regarding the sun's entry into Aries. Through this query, he asks 2 main questions: which zodiac was the sun when he entered it, and when and at what time does the sun really enter the first star of the Aries?

            Daste, Pirojshaw H.