2012 Orthophotography

Information

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The Facts

Statewide.  4 bands (red, green, blue, near-infrared).  1 foot pixels.  GeoTIFFs  CT State Plane NAD 83 Feet and UTM meters.  6131 tiles.  Total of 569 GB.  Captured in March 2012 (leaf off).  Served on CT ECO.   Each tile covers 573.9 acres, 0.897 sq mi, 232.3 hectares, 2.3 sq km and is 97.696 Mb.

 

File Formats

Images can be downloaded in three formats. All three formats

  • are imagery files that include 4 bands of data (red, green, blue, near-infrared),
  • have 1 foot pixel resolution,
  • are in the CT State Plane NAD 83 Feet coordinate system,
  • each tile (GeoTIFF or MrSID formats) covers 573.9 acres, 0.897 sq mi, 232.3 hectares, 2.3 sq km and
  • are delivered in a zip file that includes metadata. The file will need to be unzipped or extracted before the imagery can be accessed.
File Format File Size Area Covered  
GeoTIFF Tiles 97Mb zipped to 82Mb Each tile covers 0.9 sq mi or 2.3 sq km The GeoTIFF tiles are the original files delivered to the State of Connecticut from Photo Science, Inc.
Tip: beware, that at nearly 100Mb each, they take a long time to draw.
MrSID Tiles 3.6Mb Each tile covers 0.9 sq mi or 2.3 sq km The original GeoTIFF tiles were compressed to MrSID the file format. They are a much smaller file size. Read more about the MrSID format at UConn MAGIC.
JPEG2000 Town Mosaics Range from 1Gb to 8G Each town is a rectangle where no side is closer than 1000 feet from the town boundary. For town work, the mosaic is by far the best choice.
Tip: Because the town extents have a buffer and are a rectangle, there will be overlap when viewing multiple towns at once.