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ITelescopeV4FocalLength Property

The telescope's focal length, meters

Namespace: ASCOM.DeviceInterface
Assembly: ASCOM.DeviceInterfaces (in ASCOM.DeviceInterfaces.dll) Version: 7.0.0-rc.0+0
Syntax
double FocalLength { get; }

Property Value

Double
Exceptions
ExceptionCondition
PropertyNotImplementedExceptionIf the property is not implemented
NotConnectedExceptionIf the device is not connected
DriverExceptionAn 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
This property may be used by clients to calculate telescope field of view and plate scale when combined with detector pixel size and geometry.

This is only available for telescope InterfaceVersions 2 and later.

Revision History
DateVersionDescription
ITelescopePlatform 3.0Member added.
See Also