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IObservingConditionsSkyBrightness Property
Sky brightness at the observatory

Namespace: ASCOM.DeviceInterface
Assembly: ASCOM.DeviceInterfaces (in ASCOM.DeviceInterfaces.dll) Version: 6.0.0.0 (6.2.0.2774)
Syntax
double SkyBrightness { get; }

Property Value

Type: Double
Sky brightness (Lux)
Exceptions
ExceptionCondition
PropertyNotImplementedExceptionIf this property is not available.
NotConnectedExceptionIf the device is not connected and this information is only available when connected.
Remarks

Optional property, can throw a PropertyNotImplementedException

This property returns the sky brightness measured in Lux.

Luminance Examples in Lux

IlluminanceSurfaces illuminated by:
0.0001 luxMoonless, overcast night sky (starlight)
0.002 luxMoonless clear night sky with airglow
0.27–1.0 luxFull moon on a clear night
3.4 luxDark limit of civil twilight under a clear sky
50 luxFamily living room lights (Australia, 1998)
80 luxOffice building hallway/toilet lighting
100 luxVery dark overcast day
320–500 luxOffice lighting
400 luxSunrise or sunset on a clear day.
1000 luxOvercast day; typical TV studio lighting
10000–25000 luxFull daylight (not direct sun)
32000–100000 luxDirect sunlight
See Also