High Spectral and Spatial Resolution Observations of Mars in 1999 and 2001

Details High Spectral and Spatial Resolution Observations of Mars in 1999 and 2001 High Spectral and Spatial Resolution Observations of Mars in 1999 and 2001

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dps....33.5809s&link_type=abstract

American Astronomical Society, DPS Meeting #33, #58.09; Bulletin of the American Astronomical Society, Vol. 33, p.1561

Physics

Optics

Scientific paper

Visible and near-IR imaging observations of Mars were made during the 1999 and 2001 apparitions using high spectral and spatial resolution techniques that employ acousto-optic tuning and adaptive optics. The 1999 images were taken at the Apache Point Observatory 3.5 meter telescope using a near-infrared acousto-optic tunable filter (AOTF) camera, which operated between 1.6 and 3.6 microns. This enabled us to acquire ``spectral image cubes'' (x,y images with wavelength as the z-dimension) across the H and K bands on 24-25 April 1999. We analyzed the disk-integrated brightness across the H and K bands in an effort to identify atmospheric and/or surface absorption bands of CO2 and H2O. The AOTF data are examined to determine the optimal spectral resolution for spatially resolved images of Mars. The 2001 data were acquired between 18 March and 08 July 2001 in a service observing mode at the Air Force Advanced Electro-Optical System (AEOS) 3.6 meter telescope. This telescope is equipped with an adaptive optics (AO) system, and we utilized the facility AO science camera with several broad-band filters in the red/near-IR. These data are used for the characterization of several narrow-band filters that will be purchased for the AO system. Surface features in this data set are compared to those seen in recent Hubble Space Telescope imagery of Mars in a comparison of ground-based adaptive optics vs. spacecraft imaging techniques. Observations made at the Maui Space Surveillance System (MSSS), Maui, Hawaii, USA, were made as part of a collaboration between New Mexico State University and Detachment 15 of the US Air Force Research Laboratory's Directed Energy Directorate, which owns and operates the MSSS.

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