Skykeepers
skykeepers.org founded September 1, 1999
Using DMSP data coupled with active mouse over technique you can identify may cities and places on this map.
Place mouse pointer on a location and reveal the city or place.
Information and explanation on this map shown below.
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Return to Map |
Detail Map |
U.S.Census Bureau Map |
Search Map |
Magnitude |
Value |
Loss |
square miles (kilometers) |
Light energy Loss/Area |
Notes | |
| Sacramento Area | Return | GO | Bureau Map | Dark Sky Map | 2.4810^3 | 14.9 GW | 1196(1926) | 7.72x10^-3 | See Sacramento Area Map for more details. | ||
| Stockton | Return | GO | Bureau Map | Dark Sky Map |
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6.15x10^2 | 3.68 GW | 309(499) | 7.38x10^ -3 | ||
| Modesto | Return | GO | Bureau Map | Dark Sky Map |
|
5.05x10^2 | 3.03 GW | 277(447) | 6.77x10^ -3 | ||
| Fresno | Return | GO | Bureau Map | Dark Sky Map |
|
1.11x10^2 | 6.66 GW | 619(998) | 6.67x10^ -3 | ||
| Bakersfield | Return | GO | Bureau Map | Dark Sky Map | 6.78x1-^2 | 4.42 GW | (1189) | 3.72x10^ -3 | Below this scan | ||
| Fort Bragg | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Laytonville | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Bodega Bay | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Willits | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Ukiah | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Monterey, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Santa Cruze, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Carmel Valley, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Watsonville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Salinas, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Gonzales, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Campria, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Soledad, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Soledad CTF, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Greenfield, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Winters, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Williams, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| ULSxxxxx1 | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| King City, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Willows, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Dixon, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| ULSxxxxx2 | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | At SR580-SR205 Split | ||
| Davis, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Orland, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Colusa, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Atescadero, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Woodland, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Tracy, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Corning, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Paso Robles, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Paterson, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Yuba City, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Galt, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Manteca, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Newman, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Gustine, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Chico, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Gridley, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Live Oak, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Escalon, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| ULS286064 | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Oroville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Beal Air Force Base, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | 10 miles east of Marysville & Yuba City. The base, covers nearly 23,000 acres |
||
| Roseveille, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Ceres, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Turlock, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Coalinga, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Choleme, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Paradise, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Oakdale, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Waterford, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Ione, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Los Banos, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Avenal, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Atwater, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Cameron Park, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Merced, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Jackson, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Grass Valley, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Placerville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Nevada City, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Madera, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Sonora, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Pollock Pines, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Quincy, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Corcoran, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Corcoran State Prison, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Mariposa, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Tahoe Donner, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Portola, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Sierraville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Squaw Valley, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Tulare, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Sanger, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Visalia, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Meeks Bay, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Truckee, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Tahoe City, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| South Lake Tahoe, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Loyalton, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Lindsay, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Kings Beach, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Lake Wood, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Proterville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Incline Village, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Zepyr Cove, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Reno, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Carson City, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Herlong, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Boidy, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Wadsworth & Fernley, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Woodfords, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Hawthorne, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| China Lake or ULS, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | Navel Air Station | ||
| Fallon, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Fallon Naval Air Station, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Lovelock, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA | |||
| Unionville, | Return | GO | Bureau Map | Dark Sky Map | NA | NA | NA | NA |
The image and energy
evaluation on the page was obtained from
Dr. Syuzo ISOBE at the National Astronomical Observation, Japan.
The pioneering effort of Dr. ISOBE and his students is most appreciated.
Dr. Syuzo ISOBE at the National Astronomical Observation, Japan.
The pioneering effort of Dr. ISOBE and his students is most appreciated.
Some Links relating to the DMSP Satellites and images:
More images on Dr. ISOBE's web site images of other portions of North America. (site is no longer active)
International Dark-Sky Association - Images page
Elvidge, C.D., Baugh, K.E., Kihn, E.A., Kroehl, H.W, Davis, E.R, 1997,
Mapping City Lights With Nighttime Data from the DMSP Operational Linescan System.
Photogrammetric Engineering and Remote Sensing, v. 63, p. 727-734.
National Oceanic and Atmospheric Administration (NOAA) DMSP Satellite Program Description
USAF Defense Meteorological Satellite Program Fact Sheet
USAF Space and Missile System Center, DMSP Information Page
USAF Space and Missile System Center, Processing of DMSP Imagery
This may not be the exact same process used by NOAA
Glossary of Terms:
OLS: The Operational Linescan
System (OLS) measures visible (0.4-1.1 micrometers) and infrared
(10.25-12.6 micrometers) wavelengths
to provide day and night cloud cover imagery. The satellite measures data at a 0.56 km (0.34mi or 1,837ft) resolution, which is averaged on board, to produce global coverage at 2.7 km (1.6mi or 8,858ft) resolution. All of the 2.7 km resolution (smooth) data are downlinked to the ground sites while a small amount of the 0.56 km resolution (fine) data is stored and downlinked. The OLS is the primary sensor on each DMSP satellite.
to provide day and night cloud cover imagery. The satellite measures data at a 0.56 km (0.34mi or 1,837ft) resolution, which is averaged on board, to produce global coverage at 2.7 km (1.6mi or 8,858ft) resolution. All of the 2.7 km resolution (smooth) data are downlinked to the ground sites while a small amount of the 0.56 km resolution (fine) data is stored and downlinked. The OLS is the primary sensor on each DMSP satellite.
Observed Value:
Energy Loss:
Light Energy Loss/Area:
Limiting Magnitude:
05
OCT 2007
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