Design and technical data
- UV-Vis-NIR High Resolution Imaging Double Spectrometer
- passive hyperspectral UV-VIS-NIR sensor
- high straylight suppression
- moderately high spectral resolution
- high spectral stability
- high radiometric accuracy
- high dynamic range (7 - 8 orders of magnitude)
- moderate spatial resolution
- 3 different measurement modes for atmospheric measurements
| Scanner Unit | |
| Number of axis: | 2 |
| Angular resolution: | 2.5 arcsec |
| Telescope | |
| Aperture Diameter | 31 mm |
| Spectrometer | |
| Entrance slit, size: | 0.190 mm x 9.6 mm |
| Instantaneous field of view size: | 0.045 deg x 1.8 deg |
| Sun aperture size: | 0.06 mm x 3 mm |
| Sun aperture instantaneous field of view size: | 0.045 deg x 0.72 deg |
| Thermal Control | |
| Optical bench nominal temperature: | 253 K |
| Optical bench orbital temperature variation: | 0.25 K |
| Detector Temperature: | 150 K - 235 K |
| Detector array orbital temperature variation: | 0.02 K |
| In-Flight Calibration H/W | |
| On-Board Diffuser: | aluminium reflection diffuser |
| Spectral line source: | Hollow cathode discharge lamp, Pt/Cr cathode with Ne filling |
| White light source: | Tungsten-Halogen 5 Watts lamp with equivalent blackbody temperature of 3000 K. |
| Measurement Data | |
| Data Processing: | Coadding Mode |
| Nominal Data Rate: [bit/sec] | 400.000 |
| High Data Rate: [bit/sec] | 1.867.000 |
| Absolute Datation Accuracy [ms] | 10 |
| Relative Datation Accuracy [ms] | 1 |
| Budgets | |
| Mass (Budget):[kg] | 198 |
| Power(Budget): [W] | 122 |