12 October 2004 The JWST fine guidance sensor
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Abstract
The science instrumentation for the James Webb Space Telescope (JWST) has concluded its Phase A definition stage. We have developed a concept for the JWST Fine Guidance Sensor (FGS), which will form the Canadian contribution to the mission. As part of the JWST re-plan in early 2003, the FGS design was recast to incorporate a narrow-band (R~100) science-imaging mode. This capability was previously resident in the NIRCam instrument. This FGS science mode makes use of tunable filters and filter wheels containing blocking filters, calibration sources and aperture masks. The science function of the FGS Tunable Filters (FGS-TF) remains complementary to the NIRCam science goals. Narrow-band FGS-TF imaging will be employed during many of the JWST deep imaging surveys to take advantage of the sensitivity to emission line objects. The FGS-TF will also provide a coronagraphic capability for the characterization of host galaxies of active galactic nuclei and for the characterization of extra solar planets. The primary function of the FGS remains to provide the sensor data for the JWST Observatory line-of-sight stabilization system. We report here on the overall configuration of the FGS and we indicate how the concept meets the performance and interface requirements.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Neil Rowlands, Neil Rowlands, David Aldridge, David Aldridge, Richard Allen, Richard Allen, Clinton Evans, Clinton Evans, Phil Gregory, Phil Gregory, Earl Hartwig, Earl Hartwig, Brian Mackay, Brian Mackay, John Metcalfe, John Metcalfe, Gareth Richardson, Gareth Richardson, Dwight Caldwell, Dwight Caldwell, Robert Deschambault, Robert Deschambault, Terry Girard, Terry Girard, John Hackett, John Hackett, Dennis Henry, Dennis Henry, John B. Hutchings, John B. Hutchings, Chris Morbey, Chris Morbey, Richard Murowinski, Richard Murowinski, Rene Doyon, Rene Doyon, Russ Alexander, Russ Alexander, "The JWST fine guidance sensor", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.551929; https://doi.org/10.1117/12.551929
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