Dual-telescope multi-channel thermal-infrared radiometer for outer planet fly-by missions

Shahid Aslam, Michael Amato, Neil Bowles, Simon Calcutt, Tilak Hewagama, Joseph Howard, Carly Howett, Wen Ting Hsieh, Terry Hurford, Jane Hurley, Patrick Irwin, Donald E. Jennings, Ernst Kessler, Brook Lakew, Mark Loeffler, Michael Mellon, Anthony Nicoletti, Conor A. Nixon, Nathaniel Putzig, Gerard QuilliganJulie Rathbun, Marcia Segura, John Spencer, Joseph Spitale, Garrett West

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)628-639
Number of pages12
JournalActa Astronautica
Volume128
DOIs
StatePublished - Nov 1 2016
Externally publishedYes

Keywords

  • Dual-field-of-view
  • Dual-telescope
  • Europa
  • Filter radiometer
  • Icy moons
  • Surface temperature
  • Thermal emission

ASJC Scopus subject areas

  • Aerospace Engineering

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