OpenCTD on Rockethub!


Andrew David Thaler, marine scientist and one of our fellow OpenROVers, has just launched the OpenCTD project on Rockethub.

Conductivity, temperature, and depth (CTD). With these three measurements, marine scientists can unlock ocean patterns hidden beneath the waves. The ocean is not uniform, it its filled with swirling eddies, temperature boundaries, layers of high and low salinity, changing densities, and many other physical characteristics. To reveal these patterns, oceanographers use a tool called the CTD. A CTD is found on almost every major research vessel. Rare is the scientific expedition--whether it be coastal work in shallow estuaries or journeys to the deepest ocean trenches--that doesn’t begin with the humble CTD cast.

The CTD is not cheap. Commercial CTD’s start at more the $5,000 and can climb as high as $25,000 or more.

We believe that the prohibitive cost of a CTD is an unacceptable barrier to open science. The price tag excludes individuals and groups who lack research grants or significant private funds from conducting oceanographic research. We want to make this tool--the workhorse of oceanographic research--available to anyone with an interest in the oceans.

This is a great project to support. Not only will it be great to have an OpenCTD to attach to the OpenROV, but it will be a great way to test out a number of different sensors that could eventually be built into the ROV. Help Andrew make it happen!

OpenROV with a more expensive, commercial CTD system.


How is this different from : ? I'll read more and see what the differences would be...

Granted, data quality and what not may be better with the new design, however, as far as I can tell, the CTDs are similar. I've just started getting the bits for the MIT designed system together. I'd like to compare hardware and data precision and accuracy against the OpenCTD and a COTS system.

This will be interesting to benchmark. I'll keep you updated.