CameraOffset Property

public int Offset { get; set; }

Public Property Offset As Integer
	Get
	Set

public:
virtual property int Offset {
	int get () sealed;
	void set (int value) sealed;
}

Return Value

OFFSET VALUE MODE: The current offset value.

OR

Implements

This is an optional property and can throw a PropertyNotImplementedException if Offset is not supported by the camera.

• OFFSET VALUE MODE - The Offset property is a direct numeric representation of the camera's offset.
  • In this mode the OffsetMin and OffsetMax properties must return integers specifying the valid range for Offset
  • The Offsets property must return a PropertyNotImplementedException.
• OFFSETS INDEX MODE - The Offset property is the selected offset's index within the Offsets array of textual offset descriptions.
  • In this mode the Offsets method returns a 0-based array of strings, which describe available offset settings e.g. "ISO 200", "ISO 1600"
  • OffsetMin and OffsetMax must throw PropertyNotImplementedExceptions.
  • Please note that the Offsets array is zero based.

A driver can support none, one or both offset modes depending on the camera's capabilities. However, only one mode can be active at any one moment because both modes share the Offset property to return the offset value. Client applications can determine which mode is operational by reading the OffsetMin, OffsetMax and Offset properties. If a property can be read then its associated mode is active, if it throws a PropertyNotImplementedException then the mode is not active.

If a driver supports both modes the astronomer must be able to select the required mode through the driver Setup dialogue.

During driver initialisation the driver must set Offset to a valid value.

Please note that ReadoutMode may in some cases affect the offset of the camera; if so, the driver must be ensure that the two properties do not conflict if both are used.

This is only available in Camera Interface Version 3 and later.

Reference