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The first astronomical photographs in colours are said to have been those obtained by MM. Gimpel and Touchet of the total lunar eclipse of May 3, 1920, at the observatory of the Astronomical Society of France, in Paris. As this was a pioneer undertakings no data were available as to the proper time of exposure. The camera was attached to the small equatorial of the observatory, and pictures were taken with exposures ranging from 3 to 10 minutes throughout totality. All proved to be under-exposed except that with the longest exposure, which showed different shades of red coloration and several details of the lunar surface.

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https://paperspast.natlib.govt.nz/newspapers/TS19210108.2.72

Bibliographic details

Star (Christchurch), Issue 16320, 8 January 1921, Page 9

Word Count
105

Untitled Star (Christchurch), Issue 16320, 8 January 1921, Page 9

Untitled Star (Christchurch), Issue 16320, 8 January 1921, Page 9