Owner: ALOMAR-ARS

Principle:
The Bentham spectral radiometer is used for fast irradiance scanning over the 290 - 650 nm wavelenght region. The main parts of the spectroradiometer are a double monochromator for wavelenght selection, a photomultiplier tube for detection and amplification of the optical signal, and electronics for control and signal processing. The incoming spectrum is sampled through a holographic filter with 2400 grooves/mm at a blaze wavelength of 250 nm.

Bentham block diagram:

 
Bentham diffusor - ALOMAR