Search Publications
Global imaging of Mars by Hubble space telescope during the 1995 opposition
Bell, James F.; Wolff, Michael J.; Clancy, R. Todd +3 more
Hubble space telescope (HST) imaging of Mars near the 1995 opposition resulted in excellent synoptic-scale images of the planet during the spring season in the northern hemisphere. Because this season coincides with the aphelion position of Mars in its orbit, it is therefore the most difficult for ground based observation because of the relatively…
Mars ozone measurements near the 1995 aphelion: Hubble space telescope ultraviolet spectroscopy with the faint object spectrograph
Wolff, Michael J.; Clancy, R. Todd; James, Philip B. +4 more
Ultraviolet (225-330 nm) spectral scans of Mars were obtained with the Hubble space telescope (HST) faint object spectrograph (FOS) in February of 1995. These spectra yield ozone column abundances, cloud opacities (0.2-0.4 at low latitudes), and polar seasonal ice albedos from southern midlatitudes to northern high latitudes on Mars. At the time o…
The equatorial boundary of the ultraviolet Jovian north aurora observed with multispectral Hubble Space Telescope images
Grodent, D.; Dols, V.; Gérard, J. C. +1 more
Multispectral observations of the far ultraviolet Jovian aurora with the faint object camera (FOC) on board the Hubble Space Telescope are reported. They are used to describe and compare the morphology and the mean brightness of the H2 Lyman and Werner bands observed at 153, 125, and 130 nm. It is shown that most of the emissions are co…
The nature of comet Shoemaker-Levy 9 subnuclei from analysis of preimpact Hubble Space Telescope images
Mumma, Michael J.; Hahn, Joseph M.; Rettig, Terrence W. +2 more
We obtained Hubble Space Telescope (HST) Wide Field Planetary Camera images of comet Shoemaker-Levy 9 (S-L 9) prior to impact with Jupiter in 1994 to observe the effects of the Jovian gravitational field on the approaching fragments. The HST images were used to monitor the absolute brightness in the central regions of the comae, changes in the sur…