Free Access
Astron. Astrophys. Suppl. Ser.
Volume 134, Number 1, January I 1999
Page(s) 187 - 192
Published online 15 January 1999
DOI: 10.1051/aas:1999132

Astron. Astrophys. Suppl. Ser. 134, 187-192

Imaging spectroscopy of planetary surfaces: Improving the spatial contrast

G. Bellucci

CNR Istituto di Fisica dello Spazio Interplanetario Area di Ricerca di Tor Vergata Via Fosso del Cavaliere, 00133 Rome, Italy

Received December 29, 1997; accepted May 15, 1998


A method to improve the spatial contrast of planetary images acquired by means of push-broom imaging spectrometers is presented. The technique allows to better recognize the boundaries of spatially coherent units with different mineralogic composition. We have analyzed the case of a surface observed by means of an imaging spectrometer from a ground-based telescope. It is assumed that image degradation is mainly due to the atmosphere placed between the surface remotely sensed and the instrumentation. A possible extension to space born imaging spectrometers affected by random errors of the pointing system is also discussed. An example relative to the observation of the Moon is given.

Key words: instrumentation: spectrographs -- techniques: spectroscopic -- planets and satellites: general -- space vehicles -- methods: statistical

Copyright The European Southern Observatory (ESO)

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.