Location | SQM | Year | Event |
Adin, CA | 21.70 | 2008, 2009 | GSSP |
Black Butte Lake | 21.69 | 2007 | Buckhorn Campground |
Blue Canyon, CA | 21.46 | 2008 | SVAS getaway |
Big Bear Lake, CA | 21.18 | ? | RTMC (Camp Oakes) |
Yucca Valley, CA | 21.67 | 2007 | Joshua Tree Nat. Park |
Mt. Pinos, CA | 21.67 | 2005-2007 | LA amateurs getaway |
Palomar Observatory | 20.98 | 2007 | |
Prude Ranch, TX | 21.67 | ? | Texas Star Party |
Shingletown, CA | 21.62 | 2007 | Shingletown Star Party |
Citrus Heights, CA | 18.66 | 2007-2009 | Sales residence |
The highest reading obtained by the SQM's manufacturer, Unihedron, is 21.80. Readings above 22 are unlikely to be recorded. Jack Sales has an extensive compendium of SQM information on a page in his Web site.
Data from the Dan Druiscoe "All Sky Camera"
The light domes in the north east, are from the Corning and Orland areas.
Image was taken from a hlll top. The star party location is at a lower point with a trees blocking the major portion of the light intrusions
Link to Dan Driscoes full report.
click on image for full view
360 deg. view of site just after dark
DSLR Image taken by John Obermeier
click on image for full view
Sky Quality Meter readings
Sky brightness readings are shown in magnitudes per square arcsec.