The capture date polygons are provided to aid users of New Jersey's 1980's National High Altitude Photography (NHAP) imagery service in identifying source acquisition dates for areas of interest.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This data set contains polygons representing the approximate areas used in the orthophoto product for each capture date. </SPAN><SPAN>The NHAP photographs were acquired at 40,000 feet above mean terrain with flight lines centered on the 1:24,000-scale USGS map series. The orthophoto data set was received with a quadrangle boundaries shapefile, attributed with capture date for each quadrangle. The quadrangle boundaries were converted to a feature class and dissolved on the capture date field. The capture date areas are only approximate, however, due to the variable placement of seamlines during processing to create a continuous statewide image.</SPAN></P></DIV></DIV></DIV>
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