The Zodiacal Light and the Luminosity of the Night Sky

Details The Zodiacal Light and the Luminosity of the Night Sky The Zodiacal Light and the Luminosity of the Night Sky

Feb 1932

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1932natur.129q.280r&link_type=abstract

Nature, Volume 129, Issue 3251, pp. 280 (1932).

Physics

2

Scientific paper

THE spectrum of the zodiacal light was photographed by Fath,1 who found that it showed the Fraunhofer line G and a blend of H and K lines, and did not show indication of any bright line. He concluded that zodiacal light is reflected sunlight. I have recently obtained photographs of the spectrum of zodiacal light on very clear nights at Poona (lat. 18° 31' N.) with an F/l.5 glass spectrograph constructed locally (with the kind assistance of Mr. S. P. Venkateswaran). Using Mimosa extreme ortho-chromatic plates (H and D for light from half-watt lamp 2600), which I have found to be the most rapid for this work, the spectrograph is sufficiently powerful to bring out the night sky line 5577 A. in one hour's exposure with a slit-width of 0.7 mm.

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