The atmospheric sounder ASSIST II (Exosens / Telops) is a ground-based FTIR sounder covering 3 – 19 µm for atmospheric composition and radiance profiling. It uses HgCdTe (MCT), InSb detection in a 90 x 79 x 50 cm enclosure, with system mass around 80 kg (Without enclosure), for meteorology and environmental research.
Atmospheric scientists specify this atmospheric sounder when they need calibrated infrared sounding across a wide spectral span.
Overview: Field-deployable Fourier Transform atmospheric sounder for 24/7 profiling of trace gases at high spectral resolutions.
Technical Specifications
| Manufacturer | Exosens (Legacy Telops) |
|---|---|
| Detector Type | HgCdTe (MCT), InSb |
| Detector Format | Single-Pixel |
| Spectral Range | 3 – 19 µm |
| Field of View (FOV) | 45 mrad |
| Measurement Rate | 1 spectra/s (At finest spectral resolution) |
| Typical NESR | 2.5 @ 1300 cm⁻¹ nW/sr/cm²/cm⁻¹ |
| Dimensions (L x W x H) | 90 x 79 x 50 cm |
| Weight | 80 kg (Without enclosure) |
| Power Consumption | < 300 W |
| Operational Temperature | -30°C to +40°C |