ITelescopeV4SlewToCoordinatesAsync Method

Move the telescope to the given equatorial coordinates, return immediately after starting the slew.

Namespace: ASCOM.DeviceInterface
Assembly: ASCOM.DeviceInterfaces (in ASCOM.DeviceInterfaces.dll) Version: 7.0.0-rc.0+0

Syntax

C++

Copy

void SlewToCoordinatesAsync(
	double RightAscension,
	double Declination
)

Sub SlewToCoordinatesAsync ( 
	RightAscension As Double,
	Declination As Double
)

void SlewToCoordinatesAsync(
	double RightAscension, 
	double Declination
)

Parameters

RightAscension Double: The destination right ascension (hours). Copied to TargetRightAscension.
Declination Double: The destination declination (degrees, positive North). Copied to TargetDeclination.

Exceptions

Exception	Condition
MethodNotImplementedException	If the method is not implemented and CanSlewAsync is False
ParkedException	If the telescope is parked
InvalidValueException	If an invalid right ascension or declination is given.
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

Further explanation is available in this link: Master Interface Document.

ITelescoipeV4 clarification - If the mount can slew, driver authors must implement both synchronous and asynchronous slewing. Alpaca devices must only implement asynchronous slewing. See Synchronous and Asynchronous Slewing for more information.

Revision History

Date	Version	Description
ITelescope	Platform 3.0	Member added.
ITelescopeV4	Platform 7.0	Synchronous slewing is deprecated, see note above.

Reference

ITelescopeV4 Interface

ASCOM.DeviceInterface Namespace

Other Resources

Synchronous and Asynchronous Slewing