Instrumentation

584 Archival description results for Instrumentation

68 results directly related Exclude narrower terms
IND-IIA-F213-I21 · Item · 02-10-1916
Part of Correspondence related to Spectroheliograph's roofing during 1907-1923

The letter is to Evershed, sending the plan and estimate for signature and return and asking about the roofing. It also talks about a paper by Freundlich in which he abandons the hope of detecting general shifts of lines in the sun due to gravitation. And last, enquiring about his return.

Evershed, John
IND-IIA-F189-I22 · Item · 20-09-1912
Part of Correspondence from Poona and other Observatory

This letter was written to Gilbert Thomas Walker, the Director General of Observatories from Secretary to Government, Bombay Castle, Educational Department, in reply to the letter regarding removing the revolving dome of Poona Observatory to Kodaikanal. In this letter, it was stated a plan and estimate for another roof for the observatory building.

Walker, Gilbert T.
IND-IIA-F213-I34 · Item · 04-01-1921
Part of Correspondence related to Spectroheliograph's roofing during 1907-1923

The letter is from The Director General of Observatories to John Evershed, Director Kodaikanal and Madras Observatories referring to the estimate of special repairs, saying that the sum is beyond the power of sanction and it will be difficult to get work done this year unless a strong case as the money is scarce.

Evershed, John