IObservingConditionsSkyBrightness Property

Sky brightness at the observatory

Namespace: ASCOM.Common.DeviceInterfaces
Assembly: ASCOM.Common (in ASCOM.Common.dll) Version: 2.1.0+15bd426746e14ecc59ad81c289f923331d1aae8b

Syntax

double SkyBrightness { get; }

ReadOnly Property SkyBrightness As Double
	Get

Double
Sky brightness (Lux)

Exceptions

Exception	Condition
NotImplementedException	If this property is not available.
NotConnectedException	When Connected is False.
DriverException	An error occurred that is not described by one of the more specific ASCOM exceptions. Include sufficient detail in the message text to enable the issue to be accurately diagnosed by someone other than yourself.

Remarks

Optional property, can throw a NotImplementedException

This property returns the sky brightness measured in Lux.

Luminance Examples in Lux

Illuminance	Surfaces illuminated by:
0.0001 lux	Moonless, overcast night sky (starlight)
0.002 lux	Moonless clear night sky with airglow
0.27–1.0 lux	Full moon on a clear night
3.4 lux	Dark limit of civil twilight under a clear sky
50 lux	Family living room lights (Australia, 1998)
80 lux	Office building hallway/toilet lighting
100 lux	Very dark overcast day
320–500 lux	Office lighting
400 lux	Sunrise or sunset on a clear day.
1000 lux	Overcast day; typical TV studio lighting
10000–25000 lux	Full daylight (not direct sun)
32000–100000 lux	Direct sunlight