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Dual-telescope multi-channel thermal-infrared radiometer for outer planet fly-by missions
- Source :
- Acta Astronautica. 128
- Publication Year :
- 2016
-
Abstract
- The design of a versatile dual-telescope thermal-infrared radiometer spanning the spectral wavelength range 8–200 µm, in five spectral pass bands, for outer planet fly-by missions is described. The dual-telescope design switches between a narrow-field-of-view and a wide-field-of-view to provide optimal spatial resolution images within a range of spacecraft encounters to the target. The switchable dual-field-of-view system uses an optical configuration based on the axial rotation of a source-select mirror along the optical axis. The optical design, spectral performance, radiometric accuracy, and retrieval estimates of the instrument are discussed. This is followed by an assessment of the surface coverage performance at various spatial resolutions by using the planned NASA Europa Mission 13-F7 fly-by trajectories as a case study.
- Subjects :
- Infrared astronomy
Radiometer
010504 meteorology & atmospheric sciences
Spacecraft
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Aerospace Engineering
Field of view
Spectral bands
01 natural sciences
law.invention
Optical axis
Telescope
Optics
law
0103 physical sciences
Astrophysics::Earth and Planetary Astrophysics
business
010303 astronomy & astrophysics
Image resolution
Geology
0105 earth and related environmental sciences
Remote sensing
Subjects
Details
- ISSN :
- 00945765
- Volume :
- 128
- Database :
- OpenAIRE
- Journal :
- Acta Astronautica
- Accession number :
- edsair.doi.dedup.....bd73cf845cb7bb61d447a49a95754150