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Steward Observatory Images of Comet Hale-Bopp

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Observers: Steve Larson, Carl Hergenrother
Location: Steward Observatory, Arizona
Date: March 15, 1997 12:00 UT

First image: Comet Hale-Bopp in the light of CN on March 15.5 UT with the Steward Observatory 2.3-m telescope by Steve Larson and Carl Hergenrother. The contribution of the dust has been subtracted and a high pass filter has been applied. The CN structure is quite different from the dust. North is up, east to the left, and the field is about 350,000 km at the comet.

Second image: Comet Hale-Bopp in the light of CO+ on March 15.5 UT with the Steward Observatory 2.3-m telescope by Steve Larson and Carl Hergenrother. The banded structure in this high-pass filtered version near the nucleus is due to dust, but the complex, wavy outer structure is caused by CO+ ions being driven back into the tail by the solar wind magnetic field. The ion features change on a timescale of minutes. North is up, east to the left, and the field is about 350,000 km at the comet.

Carl Hergenrother
chergen@pirl.lpl.arizona.edu


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