WhiteStar's OrthoStar® Orthoquad Database consists of aerial photographic quarter quadrangles each covering approximately 15 square miles at a resolution of approximately one meter. Uniform scale and projection make these images ideal for base maps and for revising and interpreting vector cartographic features. OrthoStar® is compatible with WhiteStar 1:24,000 Texas and Public Land Survey data.

Digital orthophotography of Sabine Pass, Texas with enlargement to show one meter resolution.

Data Source
WhiteStar's OrthoStar® Database is compiled from USGS Digital Quarter Quadrangle Coverage (DOQQ) and other sources. The orthoquads are based on 1996-2003 vintage aerial photography flown at one meter resolution. The OrthoStar® database is constantly updated as new imagery becomes available.

Enhancement
WhiteStar offers images in MrSID® format using Lizardtech image compression technology. This process can reduce file size by 20:1 from the original GeoTIFF format, creating more manageable files without sacrificing image quality. The orthoquads have been tonally balanced to improve tiling and mosaicing results. Other services include compiling imagery for custom areas of interest (such as corridors), tiling for seamless coverage, and reprojection into user-specified coordinate systems.

Content
DOQQ imagery is delivered as geo-referenced raster images with uniform scale, map projection, and associated coordinate system. Orthoquads are generally Black and White, but Color Infra-Red OrthoQuads are available for Texas, Louisiana, Florida, and West Virginia.

Format
OrthoStar® imagery is currently available in the following formats:

Coverage
Nationwide coverage, available by quarter-7.5' quadrangle or area of interest. Immediate availability with rapid turnaround for reasonable cost makes OrthoStar® ideal for rapid data acquisition and large project areas.

Application
Land and parcel mapping, oil and gas exploration, pipeline mapping, telecommunications, engineering, building and development, agriculture, forestry, transportation and other government functions. Because orthoquads have the spatial properties of a map and the information content of an aerial photo, they are particularly useful as a basemap and ground truth for overlying GIS layers.

Orthophotography used for industrial planning,
oil and gas exploration, and wetlands management.