TV experiment in Vega mission: Nucleus shape reconstruction and coma tomography. Methods and preliminary results
Abstract
About 60 images taken by Vega spacecraft during the close approach to Halley were utilized for nucleus shape reconstruction. A gradient algorithm was applied to the images and nucleus limbs were extracted. A three dimensional model of the nucleus was defined as an intersection of the cylinders provided by parallel shift of the scaled limbs along the corresponding lines of view. Tomography restoration for scattering efficiency distribution in the inner coma was based on the modified Cormack's method using the same 60 images.
- Publication:
-
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 2: Dust and Nucleus p 307-316 (SEE N87-25908 19-90
- Pub Date:
- December 1986
- Bibcode:
- 1986ehac....2..307S
- Keywords:
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- Comet Nuclei;
- Halley'S Comet;
- Satellite Television;
- Tomography;
- Vega Project;
- Algorithms;
- Image Analysis;
- Light Scattering;
- Scattering Coefficients;
- Three Dimensional Models;
- Communications and Radar