Abstract
IN a letter to NATURE of Nov. 24, 1928, Cario suggested that in the region of arctic winter-night the 3000 A. barrier of stellar spectroscopy may be absent, leaving a clear view down to 2100 A., where absorption by ordinary oxygen molecules sets in. To test this idea I have made a trip to Honningsvåg, in northern Norway, the expenses being borne by the Government Research Fund of 1919. Honningsvåg is a small fishing-village in the vicinity of the North Cape (lat. 71°, long. 26° E. approximately). At this place the sun is constantly below the horizon from Nov. 20 to Jan. 23. I stayed there from Dec. 5 to Dec. 11. Being primarily interested in large-scale variations in the atmospheric transmission, I brought only a rather crude equipment, consisting of a small objective single prism quartz spectrograph equatorially mounted on tripod, with a 3-in. guiding telescope fitted with a hand-driven gear. The length of the spectrum obtained by this instrument is about 8 mm. from 5000 A. to 3000 A., and the dispersion at 3000 A. about 100 A. to a millimetre.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
ROSSELAND, S. Stellar Spectra in the Far Ultra-Violet. Nature 123, 207 (1929). https://doi.org/10.1038/123207a0
Issue Date:
DOI: https://doi.org/10.1038/123207a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.