WALRUS Hyperspectral Radiometer Buoy

• Calibrated Wavelength Range: 350 nm to 850 nm
• Pixel Resolution: 0.30 to 0.35nm
• Entrance aperture: 50 µm wide slit
• Order sorting filters: Yes
• Stray light: <0.05% at 600 nm; <0.10% at 435 nm
• Fixed integration time dynamic range: 200:1
• Variable integration time dynamic range: 5 x 10⁵:1
• Integration time: 21 milliseconds to 60 seconds
• Irradiance sensitivity at 1 second integration: 10^-5 W/m²/nm at 600 nm; 4x10^-5 W/m²/nm at 435 nm
• Radiance sensitivity at 1 second integration: 10^-6 W/m²/nm/sr at 600 nm; 1.5x10^-6 W/m²/nm/sr at 435 nm

 Reflection Efficiency of Standard Spectrometer Grating

• Calibrated Wavelength Range: 400 nm to 1000 nm
• Pixel Resolution: 0.30 to 0.35nm
• Entrance aperture: 50 µm wide slit
• Order sorting filters: Optional
• Stray light: <0.05% at 600 nm; <0.10% at 435 nm
• Fixed integration time dynamic range: 200:1
• Variable integration time dynamic range: 5 x 10⁵:1
• Integration time: 21 milliseconds to 60 seconds
• Irradiance sensitivity at 1 second integration: 8x10^-6 W/m²/nm at 600 nm; 4.5x10^-5 W/m²/nm at 435 nm
• Radiance sensitivity at 1 second integration: 8x10^-7 W/m²/nm/sr at 600 nm; 1.7x10^-6 W/m²/nm/sr at 435 nm