Historical Aerial Imagery of New South Wales from 1955

New South Wales Spatial Services provides a rectified ortho mosaic layer of aerial imagery captured in 1955. The imagery was originally captured using Wild RC-5, RC-10, and Leica RC-30 cameras at scales ranging from 1:5,000 to 1:80,000. The mosaics have undergone enhancement and rectification, targeting an overall positional accuracy of +/- 20 meters for 95% of a 100k map sheet.

Use Cases

• Analyze historical land cover and urban development based on spatially accurate 1955 imagery.
• Conduct change detection studies by comparing 1955 imagery with contemporary datasets.
• Support historical research and education through visual access to past landscapes.
• Integrate historical basemaps into GIS mapping applications using the provided WMTS service.

Strengths

• Imagery is rectified and mosaicked, enhancing spatial accuracy and usability.
• Positional accuracy was assessed using a 5km x 5km grid, targeting +/- 20m accuracy.
• Provides multiple access methods: a web viewer, WMTS for GIS, and downloadable JP2 mosaics.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, being specific to NSW.

Provenance

Source

Spatial Services (DCS)

Collection Method

Aerial photography captured with Wild and Leica cameras.

Time Range

1955

Freshness

Data currency is listed as 00/00/1955; update frequency is 'Other'.

Geography

New South Wales, Australia