Observations Of The Plasma Torus Of Jupiter With A Fabry-Perot/ Charge-Coupled Device (CCD) Imaging Spectrometer

F. L. Roesler; F. Scherb; R. Oliversen; K. Jaehnig; T. Williams; D. G. York; E. B. Jenkins

doi:10.1117/12.965858

1 January 1981 Observations Of The Plasma Torus Of Jupiter With A Fabry-Perot/ Charge-Coupled Device (CCD) Imaging Spectrometer

F. L. Roesler, F. Scherb, R. Oliversen, K. Jaehnig, T. Williams, D. G. York, E. B. Jenkins

Author Affiliations +

Proceedings Volume 0290, Solid-State Imagers for Astronomy; (1981) https://doi.org/10.1117/12.965858
Event: Solid State Imagers for Astronomy, 1981, Cambridge, United States

Abstract

The plasma torus of Jupiter is a diffuse, faintly emitting ionized gas surrounding Jupiter in the vicinity of Io's orbit. We have observed this region in the [SII] lines at 6716 Å and 6731 Å and in the [SIII] line at 9531 Å with an imaging spectrometer consisting of a narrow band tunable Fabry-Perot interferometer coupled to a CCD camera. Because of the extreme faintness of the emissions and the requirement of short exposure times imposed by the motion of the torus, which co-rotates with Jupiter, a prebinning mode of operation of the CCD was developed. This mode partially overcomes the rather large readout noise of the available CCD's when maximum spatial resolution is not required. While [SIT] images have been obtained previously using conventional image intensifiers, the [SIII] images at 9531 Å, beyond the wavelength limit of sufficiently sensitive image intensifiers, are the first ones obtained in this line. The Fabry-Perot, designed to cover the region of high CCD sensitivity eyond the limit of sensitive intensifiers, was also used to evaluate the system at the HeI wavelength 10830 Å. with short exposures of the Orion Nebula. The characteristics of the system and the method of producing the final quantitative images are described in the text.

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F. L. Roesler, F. Scherb, R. Oliversen, K. Jaehnig, T. Williams, D. G. York, and E. B. Jenkins "Observations Of The Plasma Torus Of Jupiter With A Fabry-Perot/ Charge-Coupled Device (CCD) Imaging Spectrometer", Proc. SPIE 0290, Solid-State Imagers for Astronomy, (1 January 1981); https://doi.org/10.1117/12.965858

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