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James Webb Space Telescope
NIRCAM Filters

The short-wavelength channel contains 5 wide-band (R~4), 4 medium (R~10), and 4 narrow- band (R~100) filters, while the long-wavelength channel contains 3 wide, 8 medium, 5 narrow-band filters as shown in the table below. The filters are contained in filter wheel as well as pupil wheel. The filters located in the pupil wheels will have holders designed to function as pupils, and will deliver performance similar to that expected from the combination of the imaging pupil plus filter-wheel filter.

Schematic illustration of NIRCam filter wheel assembly showing the location
of the calibration source and the flat-field projector.

NIRCam Filters:

Short Wavelength FiltersLong Wavelength Filters
F070WF277W
F090WF356W
F115WF444W
F150WF250M
F200WF300M
F140MF335M
F162MF360M
F182MF410M
F210MF430M
F164NF460M
F187NF480M
F212NF323N
F405N
F466N
F470N

The figure below shows passbands of NIRCam filters.

Schematic showing the NIRCam filters bandpasses. The vertical bar indicates the beamsplitter deadband; 'P' indicates the filters mounted in the pupil wheels. Courtesy:- NIRCam team at University of Arizona.

NIRCam narrow filter transmittances

There are two text files listing wavelength (µm) and transmittance for each filter, one for each module of NIRCam.

F164N_1F164N_2
F187N_1F187N_2
F212N_1F212N_2
F323N_1F323N_2
F405N_1F405N_2
F466N_1F466N_2
F470N_1F470N_2

NIRCAM preliminary W filter curves

NIRCam medium filter transmittances

There are two text files listing wavelength (µm) and transmittance for each filter, one for each module of NIRCam.

F140M_1F140M_2
F162M_1F162M_2
F182M_1F182M_2
F210M_1F210M_2
F250M_1F250M_2
F300M_1F300M_2
F335M_1F335M_2
F360M_1F360M_2
F410M_1F410M_2
F430M_1F430M_2
F460M_1F460M_2
F480M_1F480M_2
Transmission curves for the NIRCam medium-width filters
Transmission curves for the NIRCam medium-width filters.