Nominal NIRSpec operation configurations.
|Band||GWA element||Resolution λ/ Δλ||Filter||Spectral range/μm|
|I||G140M, G140H||1000, 2700||F100LP||1.0–1.8|
|II||G235M, G235H||1000, 2700||F170LP||1.7–3.1|
|III||G395M, G395H||1000, 2700||F290LP||2.9–5.2|
|0.7||G140M, G140H||1000, 2700||F070LP||0.7–1.2|
|IMA||MIRROR||n/a||F110W, F140X||1.0–1.2, 0.8–2.0|
Notes. Nominal combinations of filters and disperser elements in NIRSpec operations. The gratings are used with long-pass filters, and the MIRROR is used with band-pass filters in imaging mode for target acquisition. The additional filter position OPAQUE closes the instrument light path from outside and couples the internal calibration source CAA with the spectrograph.
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