TWP/TSI/C2 - camera failure

The TSI camera was producing either poor or no images during this time. The problem was 
corrected by disconnecting and reconnecting the cable terminations to the camera both 
inside the main enclosure and in the camera housing.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.mask
• count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.unknown
• region.zenith.count.thin
• count.box
• count.sub.horz

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C2 - Camera failure

The operation of the camera was itermittant. It produced very poor "hazy" images, blank 
white images, or no images when the camera failed to respond. Several attempts were made to 
correct the problem, involving checking the power and ethernet connections and wire and 
cleaning the lens and filter. The camera was replaced by a spare.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.box
• region.zenith.count.thin
• count.sub.horz
• count.sky
• region.horizon.count.thin
• region.sun.count
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• region.horizon.count
• count.mask
• count.opaque
• count.unknown

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Raw data stream - documentation not supported

TWP/TSI/C1 - obstruction in lens

The TSI at Manus has been able to remain dry and produces an image but the percentage of 
cloud cover is determined to be 100% even on cloud free days. Moisture in the camera lens 
and neutral density filter was corrupting the sky images. The lens and filter were 
cleaned, the moisure seals checked, the camera housing sealed, and desiccant added to both the 
camera housing and main electronics enclosure. On 3/23/2006, the lens was replaced and 
the sky images were significantly improved.

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• sun.strength
• Cloud amount, opaque (percent)(percent.opaque)
• count.mask
• region.zenith.count.opaque
• count.unknown
• count.sub.horz
• count.thin
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C3 - Instrument failure

The TSI failed due to a lightning strike. Several parts were replaced, modified, or 
bypassed and the system was restarted.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• lat
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• alt
• solar.altitude
• count.box
• lon
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• base_time
• count.mask
• region.sun.count.thin

• Raw data stream - documentation not supported

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C3 - controller board failure

The mirror control board failed and was replaced with a spare. Several images were 
collected in the iterim that should be ignored. These images include periods when the sun was 
not masked by the shadowband, the camera lens was covered by red tape to protect the CCD 
from direct exposure to the sun and, the instrument was inside the shop for repair and 
testing.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• Cloud amount, thin (percent)(percent.thin)
• lat
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• alt
• solar.altitude
• count.box
• lon
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• base_time
• count.mask
• region.sun.count.thin

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C1 - Shadowband continuosly rotating

The mirror was continuously spinning during different periods of the day, usually in the 
afternoon, causing the shadowband to not properly block the sun. This problem was 
corrected by removing the real-time-clock integrated circuit DSI306, or EEPROM U10, from the 
control board and reloading the position and time parameters.

• JPEG data stream - documentation not yet available

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C1 - solar shadowband inoperative

The mirror/shadowband was not turning and there was no communication with the control 
board. The shadowband was stuck in the position of 0 degrees from 8/29 to 9/20/2006.

On 10/12/2006, the mirror was replaced, the real-time clock chip was removed and heat 
sinks were added to the control board, and the Ethernet hub and serial adaptor were replaced. 
On 1/8/2007, the slip clutch assembly, timing pulley, and timing belt were replaced 
(which were damaged when the mirror was replaced). These actions did not correct the problem. 
The instrument was swapped with the unit from Darwin so that the control board could be 
repaired and tested in Darwin.

Several images were collected in the iterim that should be ignored. These images include 
periods when the sun was not masked by the shadowband or the camera lens was covered by 
tape to protect the CCD from direct
exposure to the sun. There are also extended periods of missing data when the instrument 
was shutdown, waiting for parts.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• solar.azimuth
• sun.strength
• lon
• Cloud amount, opaque (percent)(percent.opaque)
• time
• count.mask
• region.zenith.count.opaque
• count.unknown
• count.sub.horz
• count.thin
• alt
• lat
• base_time
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• time_offset
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C2 - hazy image

Condensation in the camera lens and/or filter caused the sky images to be "hazy". The 
desiccant in the main enclosure was changed and the neutral density filter was cleaned.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• solar.altitude
• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• lat
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• alt
• count.box
• region.zenith.count.thin
• count.sub.horz
• count.sky
• lon
• region.horizon.count.thin
• region.sun.count
• time_offset
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• region.horizon.count
• count.mask
• count.opaque
• count.unknown
• base_time
• solar.azimuth

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - hazy image

When the TSI from Darwin was installed (so the instrument from Manus could be returned to 
Darwin for repair) moisture in the camera lens and filter caused the sky image to be very 
"hazy". The U10 chip was removed from the control board, desiccant was installed inside 
the enclosure, additional small desiccant bags were installed inside the camera housing, 
the camera housing was sealed with silicon to prevent moisture ingress, and the camera 
lens filter was cleaned and the focus adjusted.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C2 - Mirror continuously rotating

The mirror began to continuously spin. Diagnostics were performed on the encoder, control 
board, and Ethernet adaptor. The instrument was removed on 1/2/2008 and shipped to Darwin 
for repair. The encoder and control board were replaced and the instrument was 
reinstalled.

• Cloud decision images, Total Sky Imager, PNG format(png)

• region.horizon.count.thin
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count
• region.zenith.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - Missing data

Data are missing and unrecoverable.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• solar.azimuth
• sun.strength
• lon
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• count.mask
• time
• count.unknown
• count.sub.horz
• count.thin
• alt
• lat
• base_time
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• time_offset
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C3 - Reprocess: Missing daily movies

The computer began "locking-up" every day at 11:15 UTC when the program that makes the 
daily movies is automatically run. Site Operations had to reboot the computer everyday upon 
arrival at about 21:30.

On 7/28, basic disk maintenance was performed that included error-checking, file purging, 
and defragmentation.

On 7/29, file management was performed, the programs to create the missing daily movies 
was manually run, and the times of scheduled tasks were optimized.

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - Shadowband misalignment

The shadowband was not effectively blocking the sun, except for around the noon hours when 
the sun was directly over-head. It was later found to be caused by stripped threads on 
the mirror mounting post.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• count.sky
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• count.mask

TWP/TSI/C2 - Shadowband misalignment

The mirror was continuously rotating and communication with the control board failed. As a 
result, the sun was not being blocked by the shadowband. The ethernet-to-serial adaptor 
was replaced.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - Camera misaligned

The camera was moved inside the enclosure so that the lens was not aligned with the 
viewing port and the shadowband was misaligned.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C2 - Control board failure

The indicated dome temperature and heat sink temperature were unreasonably high. The 
control board and serial adaptor were replaced and the instrument was shipped to Darwin for 
repair where the following was performed: 
- changed out 12V battery, 
- changed out faulty TT8 processor s/n 939476 with spare s/n 939476, 
- installed new model Lantronix EDS1100 serial to ethernet adapter,  
- modified board to adapter data connection to suit new adapter, 
- changed out two faulty temperature sensors (heatsink and dome), 
- changed out corroded heatsink fan and faulty wiring, 
- replaced damaged heater wiring, 
- removed corrosion and re-painted camera bracket, 
- waxed and polished dome mirror and whole instrument body.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.mask
• count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.unknown
• region.zenith.count.thin
• count.box
• count.sub.horz

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C3 - Power supply failure

The power supply began to fail, causing all black or all white images and intermittent 
image collection. The power supply was replaced.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• region.sun.count
• Sunshine Meter(sunny)
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• solar.altitude
• count.box
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• count.mask
• region.sun.count.thin

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)