DALEC
DALEC
The Dynamic Above-water Radiance (L) and Irradiance (E) Collector (DALEC) is an autonomous sea-going hyperspectral radiometer designed to continuously measure above-water ocean reflectance during ship transit.
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Features
- Continuous and fully automated data collection during transit
- Integrated GPS, pitch, roll and heading
- Motorised azimuth control
- Automatic integration time
- Real-time dark current compensation
- Rapid, sequential measurements up to 5Hz
Specifications
| Detectors | 3 x Zeiss MMS1 UV-VIS NIR enh. spectrometers |
| Wavelength range | 350 – 1150 nm. (Calibrated range: 400 – 900 nm) |
| Spectral resolution | 10 nm (3.3 nm pixel spacing) |
| Sea viewing radiance channel (Lu) | 40° from nadir view angle 5° degree Field-of-View |
| Sky viewing radiance channel (Lsky) | 40° from zenith view angle 5° degree Field-of-View |
| Downwelling Irradiance Channel (Ed) | PTFE Diffuser Cosine error: <3% (0 – 60°) |
| Calibration | NIST traceable radiometric calibration |
| Acquisition | 16 bit ADC |
| Sampling Rate | Sequential sampling up to 5 Hz per (Lu, Lsky, Ed) sequence |
| Integration time | Automatic or manual from 1 – 6600 ms |
| Communication | RS-232 / WiFi / Internal data logging (2GB storage) |
| Positional sensors | GPS, pitch, roll and heading |
| Motor-controlled sun-relative azimuth angle | User specified in software |
| Input Voltage (deck unit) | 24 VDC |
| Deck unit battery | rechargeable Lithium Ion |
| LED status indicators | Yes |
| Connectors | Micro WET-CON MCBH8M (sensor), MCBH4F and MCBH8F (deck unit) |
| Length | 210 mm |
| Diameter | 140 mm |
| Weight | 5 kg |
| Materials | Acetal, SS316, PTFE and Fused silica |
| Passive gymbal | Anodized aluminum with ceramic bearings |
| Water resistant | Yes |
| Operating Temperature | 0 to +50 °C |
Software
DALECview
DALECview is GUI program that allows users to easily configure and display real-time data via serial communication.
Contact Sales to download the latest version.
For Microsoft Windows platforms.