Near Infrared Camera
NIRCam at a Glance:
NIRCam consists of an imaging assembly
within an enclosure that is mounted in the ISIM. The imaging assembly consists of two
fully redundant, identical optical trains mounted on two beryllium benches. The incoming light initially reflects off the pick-off mirror.
Subsequently it passes through the collimator and the dichroic, which is used to split the
light into the short (0.6-2.3µm) and long (2.4-5.0µm) wavelength light paths. Each of
these two beams then passes through a pupil wheel and filter wheel combination, each
beam having its own separate pupil and filter wheel. After this, the light passes through
the camera corrector optics and is imaged (after reflecting off a fold flat in the short
wavelength beam) onto the focal plane arrays (FPAs).
NIRCam Imaging Properties:
| Wavelength range (µm) | 0.6 to 2.3 |
| 2.4 to 5 |
| Nyquist λ (µm) | 2/4 |
| Pixel Format | 40962 (short λ) |
| 204822(long λ) |
| Pixel Scale | 0.032″ (short λ) |
| 0.065″ (long λ) |
| Field (arc min) | 2.2 x 2.2 (one module) |
| Spectral Resolution | 4,10,100 |
NIRCam Filters:
| Short Wavelength Filter | Long Wavelength Filter |
| F070W | F277W |
| F090W | F356W |
| F115W | F444W |
| F150W | F250M |
| F200W | F300M |
| F140W | F335M |
| F162W | F360M |
| F182W | F430M |
| F210M | F460M |
| F164N | F480M |
| F187N | F323N |
| F212N | F405N |
| F225N | F418W |
| F466N |
| F470N |
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