Open Access
Table 1
Summary of the characteristics of the Euclid mission as set out in the Euclid ‘Red Book’ (Laureijs et al. 2011).
| SURVEYS | |||||
|---|---|---|---|---|---|
| Area (deg2) | Description | ||||
| Wide Survey | 15,000 (required) | Step and stare with 4 dither pointings per step. | |||
| 20,000 (goal) | |||||
| Deep Survey | 40 | In at least 2 patches of > 10 deg2 | |||
| 2 magnitudes deeper than wide survey | |||||
| PAYLOAD | |||||
| Telescope | 1.2 m Korsch, 3 mirror anastigmat, f=24.5 m | ||||
| Instrument | VIS | NISP | |||
| Field-of-View | 0.787×0.709 deg2 | 0.763×0.722 deg2 | |||
| Capability | Visual Imaging | NIR Imaging Photometry | NIR Spectroscopy | ||
| Wavelength range | 550–900 nm | Y (920-1146nm), | J (1146-1372nm) | H (1372-2000nm) | 1100-2000nm |
| Sensitivity | 24.5 mag | 24 mag | 24 mag | 24 mag | 3 10−16 erg cm-2 s-1 |
| 10σ extended source | 5σ point source | 5σ point source | 5σ point source | 3.5σ unresolved line flux | |
| Detector | 36 arrays | 16 arrays | |||
| Technology | 4k×4k CCD | 2k×2k NIR sensitive HgCdTe detectors | |||
| Pixel Size | 0.1 arcsec | 0.3 arcsec | 0.3 arcsec | ||
| Spectral resolution | R=250 | ||||
| SPACECRAFT | |||||
| Launcher | Soyuz ST-2.1 B from Kourou | ||||
| Orbit | Large Sun-Earth Lagrange point 2 (SEL2), free insertion orbit | ||||
| Pointing | 25 mas relative pointing error over one dither duration | ||||
| 30 arcsec absolute pointing error | |||||
| Observation mode | Step and stare, 4 dither frames per ñeld, VIS and NISP common FoV = 0.54 deg2 | ||||
| Lifetime | 7 years | ||||
| Operations | 4 hours per day contact, more than one groundstation to cope with seasonal visibility variations; | ||||
| Communications | maximum science data rate of 850 Gbit/day downlink in K band (26GHz), steerable HGA | ||||
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