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A filter spectrometer concept for facsimile camerasA concept which utilizes interference filters and photodetector arrays to integrate spectrometry with the basic imagery function of a facsimile camera is described and analyzed. The analysis considers spectral resolution, instantaneous field of view, spectral range, and signal-to-noise ratio. Specific performance predictions for the Martian environment, the Viking facsimile camera design parameters, and a signal-to-noise ratio for each spectral band equal to or greater than 256 indicate the feasibility of obtaining a spectral resolution of 0.01 micrometers with an instantaneous field of view of about 0.1 deg in the 0.425 micrometers to 1.025 micrometers range using silicon photodetectors. A spectral resolution of 0.05 micrometers with an instantaneous field of view of about 0.6 deg in the 1.0 to 2.7 micrometers range using lead sulfide photodetectors is also feasible.
Document ID
19740019761
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Jobson, D. J.
(NASA Langley Research Center Hampton, VA, United States)
Kelly, W. L., IV
(NASA Langley Research Center Hampton, VA, United States)
Wall, S. D.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1974
Subject Category
Instrumentation And Photography
Report/Patent Number
L-9356
NASA-TN-D-7560
Accession Number
74N27874
Funding Number(s)
PROJECT: RTOP 502-03-52-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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