The composite infrared spectrometer (CIRS) instrument on board the Cassini Saturn orbiter employs two HgCdTe detector arrays for mid-infrared remote sensing of Titan’s and Saturn’s atmospheres. In this paper we show that the real detector spatial response functions, as measured in ground testing before launch, differ significantly from idealized “boxcar” responses. We further show that neglecting this true spatial response function when modeling CIRS spectra can have a significant effect on interpretation of the data, especially in limb-sounding mode, which is frequently used for Titan science. This result has implications not just for CIRS data analysis but for other similar instrumental applications.
© 2009 Optical Society of AmericaFull Article | PDF Article
CorrectionsConor A. Nixon, Nicholas A. Teanby, Simon B. Calcutt, Shahid Aslam, Donald E. Jennings, Virgil G. Kunde, F. Michael Flasar, Patrick G. J. Irwin, Fredric W. Taylor, David A. Glenar, and Michael D. Smith, "Infrared limb sounding of Titan with the Cassini Composite InfraRed Spectrometer: effects of the mid-IR detector spatial responses: errata," Appl. Opt. 49, 5575-5576 (2010)
More Like This
D. E. Jennings, F. M. Flasar, V. G. Kunde, C. A. Nixon, M. E. Segura, P. N. Romani, N. Gorius, S. Albright, J. C. Brasunas, R. C. Carlson, A. A. Mamoutkine, E. Guandique, M. S. Kaelberer, S. Aslam, R. K. Achterberg, G. L. Bjoraker, C. M. Anderson, V. Cottini, J. C. Pearl, M. D. Smith, B. E. Hesman, R. D. Barney, S. Calcutt, T. J. Vellacott, L. J. Spilker, S. G. Edgington, S. M. Brooks, P. Ade, P. J. Schinder, A. Coustenis, et al.
Appl. Opt. 56(18) 5274-5294 (2017)
J. Brasunas, A. Mamoutkine, and N. Gorius
Appl. Opt. 55(17) 4699-4705 (2016)
Christopher R. Webster, Stanley P. Sander, Reinhard Beer, Randy D. May, Robert G. Knollenberg, Donald M. Hunten, and John Ballard
Appl. Opt. 29(7) 907-917 (1990)