Orthophotography within the Marlborough Region captured in the flying season of 2021-2022. Coverage encompasses approximately 8,210 sq km of imagery within the Marlborough District.
Imagery was captured for Marlborough District Council by Aerial Surveys Ltd, Unit A1, 8 Saturn Place, Albany 0632, New Zealand.
Data comprises: • 5939 ortho-rectified RGB GeoTIFF images in NZTM projection, tiled into the LINZ Standard 1:2000 tile layout • Tile layout in NZTM projection containing relevant information.
The supplied imagery is in terms of New Zealand Transverse Mercator (NZTM) map projection. Please refer to the tile index layer for specific details, naming conventions, etc.
Imagery supplied as 25cm pixel resolution (0.25m GSD), 3-band (RGB) uncompressed GeoTIFF. The final spatial accuracy is ±0.4 at 95% confidence level in clear flat areas.
Index tiles for this dataset are available as layer [Marlborough 0.25m Rural Aerial Photos Index Tiles (2021-2022)](http://data.linz.govt.nz/layer/110133)
The aerial photography for this project was captured within the 2021/22 flying season (September 2021 – April 2022).
Camera and Flying Height All photography was captured using Vexcel's digital UCE camera fitted with the 100 mm lens and flown at an altitude of approximately 15,777 ft (4,808 m) with the lowest ground GSD set at 0.25 m.
Capture Dates The aerial imagery was captured on the following dates: 8 + 10 November 2021, 26 November 2021, 8 December 2021, 18 + 29+ 30 January 2022.
Sun Angle Imagery captured with a minimum sun angle of +35 degrees. The sun angle of the imagery used for the orthorectification ranged from 35 to 71 degrees.
Flight Planning The flight survey number for this project is SN14214 The flight plan is named ’Marlborough Rural 25cm V2 UCE’ and comprises 76 runs, 4,313 frames. All imagery captured in stereo: forward overlap 60%, min 54%; side overlap 35%, min 15%.
Environmental Specification Imagery captured with no cloud or cloud shadow within the area of interest. Identified coastal area for low tide captured within 1.5 hours either side of low tide. All other coastal areas have best efforts to capture within 1.5 hours of low tide if possible.
Ground Control A combination of existing control and LINZ benchmarks were used for aerial triangulation for this project