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ObservingConditionsSkyBrightness Property
Sky brightness at the observatory

Namespace: ASCOM.DriverAccess
Assembly: ASCOM.DriverAccess (in ASCOM.DriverAccess.dll) Version: 6.0.0.0 (6.3.0.2839)
Syntax
public double SkyBrightness { get; }

Property Value

Type: Double
Sky brightness (Lux)

Implements

IObservingConditionsSkyBrightness
Exceptions
ExceptionCondition
PropertyNotImplementedExceptionIf this property is not available.
NotConnectedExceptionIf the device is not 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