Open Access
Table 2
General median properties of the 17 Euclid ERO fields with a 0.60 deg2 sky coverage for single ROS observations.
| Band | IE | YE | JE | HE | Unit/note |
|---|---|---|---|---|---|
| FWHM | 0.157 | 0.477 | 0.486 | 0.492 | arcsec |
| FWHM | 1.57 | 1.59 | 1.62 | 1.64 | pixel |
| Pixel sampling | 0.1 | 0.3 | 0.3 | 0.3 | arcsec pixel–1 |
| Depth 5 σ stars | 27.12 | 24.45 | 24.60 | 24.52 | mag (PSF or aperture photometry) |
| Depth 10 σ galaxies | 25.29 | 22.97 | 23.22 | 23.31 | mag (Kron magnitude) |
| Limiting surface brightness | 29.9 | 28.2 | 28.4 | 28.4 | mag arcsec–2, 10ʺ × 10ʺ scale at 1 σ |
| Sky background | 22.3 | 22.1 | 22.2 | 22.3 | mag arcsec–2, range: [–0.5, +0.5] |
| Photometric zero point | 30.13 | 30.0 | 30.0 | 30.0 | mag, ADU (first ERO public data release) |
| Astrometry (internal) | 5.1 | 14.9 | 14.9 | 14.9 | mas |
| Saturation | 20 900 | 141 000 | 107 000 | 111 000 | ADU |
| Total number of sources | 11 359 274 | 5 257 808 | 5 257 808 | 5 257 808 | All ERO (common detection on NISP) |
Notes. Tables B.1 and B.2 list all properties per ERO field. All magnitudes are instrumental and in the AB system. The range of the sky background reflects the ecliptic latitudes covered across the ERO fields.
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