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Table 1

Assumptions used for the instrument simulations.

Parameter Value

Telescope diameter 1.5 m
Spectral bandwidth 0.45–0.90 μm
Spectral resolution R (λ = 0.675 μm) 50
Number of spectral channels 35
Δλ per channel  ~0.013 μm
λ/D sampling at 0.45 μm 3 pixels
Wavefront errors (λ = 0.675 μm) 15 nm rms (f-3 PSDa)
Amplitude aberrations 0.1% (f-1 PSDa)
Number of actuators on the DM 64  ×  64
Phase estimation by the SCC perfect
Throughput 23%
Quantum efficiency 70%
Maximum integration time 200 h
Read-out noise 0.2 e- rms per pixel
Full well capacity 300 000 e-
Time per single exposure 1000 s
Flat field accuracy 0.5%
Zodiacal light V = 23.1 mag arcsec-2
Exozodi level 1 zodi

Notes. The parameter values are discussed in Sects. 2.1, 2.2 and 3.2.

(a)

f is the spatial frequency of the optical defect, PSD refers to power spectral density.

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