The CORONA Atlas is best viewed at a resolution of 1280 x 1024 or higher. According to our testing, Mozilla Firefox, Microsoft Internet Explorer 8 & 9, and Google Chrome display the Atlas correctly. There appear to be some problems when using Internet Explorer 7, it is recommended to upgrade your browser. Internet Explorer 6 does not function properly with this website.
- Zoom In to an area by double-clicking the mouse or holding the shift key while drawing a box.
- Zoom In/Out using the mouse scroll wheel.
- Move/Pan around the map by holding the left mouse button while dragging.
- Zoom to Default view by clicking the button in the Map Contents menu.
- Bookmarking is possible in the Atlas. Use browser capabilities for saving specific locations.
Map Layer Visibility
At the default zoom level of the atlas, basic outlines representing the footprints for available CORONA images are displayed. As users zoom in to a larger scale, the CORONA images and archaeological sites become viewable.
Map Contents Menu
Map layers can be toggled using the Map Contents menu. Some map layers are expandable, allowing sub-layers to be turned on or off. Use the plus sign(+) next to a layer to access sub-layers. Use the blue down-arrow next to an image to download the source data.
Map layers include populated places in the Middle East, and modern political boundaries between countries. These layers help users to navigate in the area, and can be turned off at will.
Footprints layer contains the area covered by CORONA images. At lower scales, image footprints are merged to depict separate CORONA missions for easier viewing. In higher scales, users can investigate individual footprints and turn them on and off when navigating through these images. Footprint locations and coverage are estimated via photogrammetrical methods; they are accurate representations of image areas mapped on the ground in bowtie shapes.