Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p23a0233s&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P23A-0233
Physics
5410 Composition, 5464 Remote Sensing, 5494 Instruments And Techniques
Scientific paper
In May 2004, we used the University of Hawaii's (UH's) Airborne Hyperspectral Imager (AHI), a 256-band spectrometer covering 7.8-11.5 microns, on the UH 2.2 m telescope on Mauna Kea, Hawaii to image the Moon. At 1-2 days past full Moon, we collected hyperspectral images for the entire near side at diffraction-limited resolution (about 5 km at center of disk). These data, by far, constitute the most extensive hyperspectral imagery ever collected of the Moon at these wavelengths. Thermal infrared wavelengths have been previously shown to have potential for identifying lunar mineralogy and petrology based on laboratory experiments (e.g., [1-3]) and telescopic observations of a handful of locales on the Moon (e.g., [4]). We are currently processing our data for atmospheric and telescopic transmission and emission effects, as well as compensating for unforeseen registration errors due to wavelength dependent refraction in the atmosphere, apparently due to ozone. While the signal is dominated by surface temperature and surface topography compounded by challenging calibration, preliminary analysis indicates that the final signal-to-noise will approximate the value of 1000 reported by [3] as necessary for useful interpretation of lunar thermal infrared spectra. [1] Conel, J. E., JGR, 74: 1614-1634, 1969. [2] Salisbury, J. W. and L. S. Walter, JGR, 94: 9192-9202, 1989. [3] Salisbury, J. W. et al., Icarus, 130: 125-139, 1997. [4] Sprague, A. L. et al., Icarus, 100: 73-84, 1992.
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