JWST Near Infrared Camera (NIRCam) instrumentation includes optics, filters, detectors, and other hardware receiving light from the field of view to support its 5 observing modes, together with the initial mirror alignment process and periodic wavefront sensing.
The NIRCam science observing modes include imaging, coronagraphy, and grism wide field slitless spectroscopy, as well as time-series monitoring in imaging and spectroscopy. Information on the NIRCam instrument hardware subsystems is available in these articles:
- NIRCam Optics describes the collimator and camera triplets, and the folding mirrors.
- NIRCam Coronagraphic Occulting Masks and Lyot Stops describes the bar and round occulting masks.
- NIRCam Pupil and Filter Wheels describes the Lyot stops, filters, and other ancillary elements for initial mirror alignment and wavefront sensing.
- NIRCam Filters describes the broad-, medium-, and narrowband filters.
- NIRCam Grisms describes slitless spectroscopy, which is limited to the long wavelength channel (2.4–5.0 µm).
- NIRCam Weak Lenses describes weak lenses. These are used primarily to defocus light for wavefront control. They enable imaging bright targets without saturation in time-series monitoring mode.
- NIRCam Detector Overview describes the 8 short wavelength (0.6–2.3 µm) and 2 long wavelength (2.4–5.0 µm) detectors covering the same field of view for both modules.
The 2 NIRCam modules contain nearly identical sets of all of these elements.
The full list of NIRCam instrumentation articles:
- • NIRCam Field of View
- • NIRCam Modules
- • NIRCam Optics
- • NIRCam Dichroics
- • NIRCam Pupil and Filter Wheels
- • NIRCam Filters
- • NIRCam Coronagraphic Occulting Masks and Lyot Stops
- • NIRCam Filters for Coronagraphy
- • NIRCam Grisms
- • NIRCam Weak Lenses
- NIRCam Detector Overview