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A Determination of The Nuclear Size of Comet Hale–Bopp (C/1995 O1)

Sekanina, Z.

The signal of the nucleus was digitally extracted from six images of the innermost coma of this comet, obtained with the Hubble Space Telescope's Wide-Field Planetary Camera 2 in the planetary mode between October 23, 1995 and October 17, 1996. Two different anisotropic, power-type laws were used to filter out the contribution from the dust coma: …

Detection of a Satellite Orbiting The Nucleus of Comet Hale–Bopp (C/1995 O1)

Sekanina, Z.

This paper reports on the detection of a satellite around the principal nucleus of comet Hale-Bopp. As shown elsewhere, a successful morphological model for the comet's dust coma necessitates the postulation of overlapping jet activity from a comet pair. The satellite has been detected digitally on images taken with the Hubble Space Telescope's Wi…

Ultraviolet observations of comet Hale-Bopp

Feldman, Paul D.

Ultraviolet spectroscopy and imaging of comet Hale-Bopp (C/1995 O1) were obtained from a variety of space platforms from shortly after the discovery of the comet through perihelion passage. Observations with the International Ultraviolet Explorer (IUE) and the Hubble Space Telescope (HST) spanned the range of 6.8 to 2.7 AU pre-perihelion, but IUE …

NICMOS/HST Post-Perihelion Images of Comet Hale-Bopp in Outburst

Spinrad, H.; Schneider, G.; McCarthy, D. +5 more

Near-infrared images of comet Hale-Bopp (C/1995 O1) were obtained from NICMOS/HST on UT August 27–28, 1997, when the comet emerged from the 50 degree solar elongation limit at 2.99 AU from Earth. Diffraction-limited images were obtained with camera 2 filters centered at 1.87, 1.90, 2.04 and 2.22 µm with ∼0.2″ resolution (0.076″/pixel; 165 km…