Cameras Cleaned

There has been a great deal of fouling due to growth of muscles on the camera in the past few months. Today Pichaya and Paul cleaned the cameras and removed large amounts of small muscles from nearly everywhere on the system. Likely both wipers had been fouled and where not operating for the 10 days. Given the extensive fouling on the cameras, they will be temporarily removed for a major service in the near future.

Cleaning Dive

Pichaya and Paul cleaned the cameras yesterday in the midst of a significant bloom of phytoplankton. All the new fixtures are working well.

Cameras Back Up

We installed the cameras today after a two-week down time for maintenance. They are back online and recording data.

We completed the following major work on the cameras

  • Replace a broken wiper
  • Improve the contrast in the SPCP2 images by adjusting the illumination optics
  • Replace the old and damaged aluminum plates with fiberglass
  • Replace the permanent copper mesh with a larger, removable mesh for monthly cleaning

Below are some photos of the assembly before going into the water

  

Zebra-Tech Hydro-Wipers Added to Automatically Clean Camera Ports

In early June we added two custom designed Zebra-Tech  Hydro-Wipers to the camera system to automatically cleaning the view ports and reduce the number of port cleaning dives required and increase the data quality between cleanings. The wipers have been running once an hour for the last three months. The wipers have made a huge improvement in data quality and reduction in cleaning effort. The ports can now be left for several months at a time without the need for manual cleaning while the port surface remains nearly as clean as immediately after a manual cleaning by divers.

Below are two videos of the new wiper setup. The first video shows the ports after 6 weeks without any manual cleaning, the second video shows the wiper in action. Videos are courtesy of Jimmy Fumo and Melissa Carter.

Cameras are back in the water

After almost three weeks of maintenance, the SPC system is back on the pier! The housings got a fresh coat of tape, the end-caps were cleared of barnacles, and the ports have new anti-biofouling wipers. As soon as the cameras were turned on, they started capturing loads of images of diatom chains. Hopefully the new wipers will keep the samples coming at full capacity with minimal service requirements.

This 0.5-mm long diatom chain showed up in the SPCP within 10 minutes of system powering up.