Sky Brightness Measurements made at Palomar Observatory 

Data collected by the National Park Service Night Sky Team on March 24, 2006.

Full Panoramic View:

Click to enlarge

Partial Panoramic View covering south, west and north:

Partial Panoramic View covering north, east and south:

Fisheye View:

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National Park Service Night Sky Team. Follow this link to learn how they collect the data and to see data that they have collected from other sites.