All scientific data collected by the Australian Antarctic program (AAp) are eventually described in the Catalogue of Australian Antarctic and Subantarctic Metadata (CAASM). CAASM can be used to search through AAp data descriptions, and it also provides links to access publicly available datasets, which can either be immediately downloaded or obtained from the Australian Antarctic Data Centre (AADC).

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Citation
Morris, R.J., Burns, G. and Symons, L. (2004) Observatory Operations - All Sky Imager Data from the Australian Antarctic Territory and Macquarie Island, Ver. 1, Australian Antarctic Data Centre - https://data.aad.gov.au/metadata/records/ASAC_527_allsky, Accessed: 2022-10-01
Title
Observatory Operations - All Sky Imager Data from the Australian Antarctic Territory and Macquarie Island
Data Centre
Australian Antarctic Data Centre, Australia
Created Date
2004-06-28
Revision Date
2017-04-26
Parent record
None

Description

All Sky Imager Systems (ASIS) are deployed at Casey, Davis, Macquarie island and Mawson. These systems are autonomous data collection systems which record All Sky Imager data during periods of darkness at the stations.

The data are collected using a monochromatic video camera fitted with an Image Intensifer and a Fish eye lens. A filter (normally 558 nm) is also fitted to the cameras. (this can be varied at Davis but the filter in use) is stamped onto the image)

Images are digitised by a controlling PC and written to hard disk as JPEG images. Images are sorted into daily folders and returned to Australia annually for processing into MPEG files for each UTC day.

The end result is a short All Sky movie containing images for the periods of darkness between 0000 and 2359 UTC each day of the year. Each MPEG file has a short preamble which shows the Station latitude and longitude as orientation information. Each frame is stamped with time, date, filter and exposure information.

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Quality

All Sky Imager Data
Data are recorded with a timing accuracy of +/- 1 second. Typical time resolution is 1 frame per 30 seconds although this can be interpreted from the time stamps on each frame.

Every frame has the following information stamped in the corners:
- Station Name
- UTC Time
- Day Number
- Year Number
- Exposure Time
- Filter Wavelength

In addition, each file contains preface frames giving latitude and longitude as well as orientation information.

Access

Data are available for use in research activities provided consent of, and suitable reference to experiments and principal investigator is given.

Data stored as video and image files (mpeg and jpeg).

Data are available in nightly MPEG files and are typically between 10 Mbytes and 60 Mbytes in length depending on the time of year.

Owing to the amount of data, these files are stored on the ATMOS server at the Australian Antarctic Division. Contact the AADC to access the data.

Temporal Coverages

Spatial Coverages

Data Resolution

Temporal Resolution:
30 Second(s)

Science Keywords

Additional Keywords

  • AIRGLOW
  • ANTARCTICA
  • AURORA
  • AURORAE
  • COSMIC NOISE
  • DATE
  • ELECTRONS
  • IONOSPHERE
  • LATITUDE
  • LONGITUDE
  • MAGNETIC FIELDS
  • MAGNETOMETER
  • POSITIVE DOWNWARDS
  • POSITIVE GEOGRAPHIC EAST
  • POSITIVE GEOGRAPHIC NORTH
  • RIOMETER
  • SOLAR EVENTS
  • STATION

Locations

  • OCEAN > SOUTHERN OCEAN
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA > DAVIS
  • CONTINENT > ANTARCTICA > MAWSON
  • CONTINENT > ANTARCTICA > CASEY
  • GEOGRAPHIC REGION > POLAR
  • VERTICAL LOCATION > IONOSPHERE

Platforms

  • FIXED OBSERVATION STATIONS

Instruments

  • All-Sky Camera

Researchers

  • morris, ray (INVESTIGATOR)
  • burns, gary (INVESTIGATOR,TECHNICAL CONTACT)
  • symons, lloyd (TECHNICAL CONTACT,DIF AUTHOR)

Use Constraints

This data set conforms to the CCBY Attribution License
(http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_527_allsky when using these data.

Creative Commons License