Instrument: Wet Labs CSTAR Transmissometer
A highly integrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The instrument is capable of either free space measurements, or through the use of an optical flow tube, flow-through sampling with a pump. It can be used in profiling, moored, or underway applications. more information from Wet Labs
A WetLabs C-star transmissometer (operating at a wavelength of 660 nm with a 25cm pathlength) was equipped on the CTD rosette.