A rocket observation of the far-ultraviolet spectrum of Saturn

Details A rocket observation of the far-ultraviolet spectrum of Saturn A rocket observation of the far-ultraviolet spectrum of Saturn

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222..365w&link_type=abstract

Astrophysical Journal, Part 1, vol. 222, May 15, 1978, p. 365-369.

Astronomy and Astrophysics

Astronomy

4

Far Ultraviolet Radiation, Rocket-Borne Instruments, Saturn (Planet), Saturn Rings, Ultraviolet Astronomy, Albedo, Focal Plane Devices, Line Spectra, Spectrographs

Scientific paper

Far-ultraviolet (1160-1750 A) spectra of the Saturnian disk and the ring system have been obtained by using a very sensitive rocket-borne spectrograph with a microchannel plate detector. The use of two apertures of different diameter in the telescope focal plane permitted the separation of the contribution of the planetary disk from that of the rings. H I lambda 1216 was the only atomic spectral line emission detected in the planet and the rings. A weak signal from the disk between 1300 A and 1500 A was observed. Geometric disk albedos, averaged over 50 A, were determined from 1500 A to 1700 A. Measurements of the ring reflectivity longward of 1650 A are compatible with H2O frost but not NH3 frost.

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