Far-Ultraviolet Photography of Orion: Interstellar Dust

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Science  30 Oct 1970:
Vol. 170, Issue 3957, pp. 527-531
DOI: 10.1126/science.170.3957.527


Wide-angle photography of Barnard's Loop Nebula suggests that the nebular emission is much less intense in the 1230- to 2100-angstrom spectral region than in the 2200- to 3200-angstrom near-ultraviolet region. This contrast may be due to differences in the absorption or scattering properties of the interstellar grains in these two wavelength regions.

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