Data Trawler - Event Details

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Event details

Voyage: IN2020_V10       [details]
When: 2020-11-19 22:35:41 UTC

- entered into Elog/Everlog as 2020-11-19 22:35:41
Log: PLAOS_in2020_v10
Equipment: Start
Position: Latitude: -43.512 Longitude: 148.10217

- entered into Elog as 43 30.72 S, 148 06.13 E
Station Number:4
Vertical Starboard Strobe Working?:Yes
Vertical Starboard Camera Working?:Yes
Vertical Port Strobe Working?:Yes
Vertical Port Camera Working?:Yes
Oblique Strobe Working?:Yes (see text)
Oblique Camera Working?:Yes (see text)
Vertical Video Light Working?:Yes
Vertical Video Working?:Yes
Acoustics Frequencies (kHz):38, 120
Acoustics Mode:FM
Acoustics Calibration:38.1 mm WC @ 4.25 m
Optics Calibration:10 cm long 3 tags at 1, 2, and 3 m
Logging range (m):100
Deployment Depth (m):1040
Planning Comments:FM deep-water deployment to check all data stream (no Tube 2)
Operation Comments:A deep-water deployment using tube 1 (i.e. 38 and 120 kHz) in FM mode. The counterweight to sink PLAOS in upper few meters was not used. This takes way the use of acoustic release and an additional step in our usual deployment procedure. PLAOS is sinking by its own weight. FM acoustics at 38 and 120 kHz look promising, better than previous CW deployment. Target tracking seems to be working with a ping rate of ~4.7 pps. Vertical port and starboard camera look nice and it appears 1600 ISO is doing a good job. Lighting seems to be okay. Oblique camera is not taking picture at every second. After ~20-30 m depth oblique camera is taking pictures once every minute, and we are getting less number of pictures. Communicated this issue to Jeff and Rob. It appears settings need to be changed on oblique camera like opening aperture or increasing ISO or increasing strobe power. The video data is still problematic. Increased aperture doesn’t seem to fix the issue. At deeper depth the movie is black. Could be due to red light used?
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