Abstract The Halley Optical Probe Experiment (HOPE) on board the Giotto spacecraft has provided the first in-situ measurements, both of the dust and of some gaseous species, from inside the coma of the comet. The instrument has already been described /1/, together with first results /2/. The purpose of this note is to show how optical measurements can lead to in-situ information, how those were obtained during the 13–14 march 1986 Halley fly-by, and what is the status of the data analysis.
In-situ photopolarimetric measurements of dust and gas in the coma of Halley's comet
Advances in Space Research ; 5 , 12 ; 197-199
1985-01-01
3 pages
Article (Journal)
Electronic Resource
English
Small-size dust particles near Halley's comet
Elsevier | 1989
|NH2 and NH spatial intensity distribution in the coma of Halley’s comet
Online Contents | 2007
|NH2 and NH spatial intensity distribution in the coma of Halley’s comet
Elsevier | 2007
|Thermal modeling of Halley's comet
Elsevier | 1984
|Space Missions to Halley's Comet
NTIS | 1986
|