stella.acquire

Interface Pivoting

All Known Implementing Classes:

OffsetPinholePivot, PinholePivot, PointingModelPivot

public interface Pivoting

Instances of this interface know where the acquisition CCD hot point is. This is called the pivotal point as in an alt-az telescope it is also the point of rest around which the sky image is revovling.

Author:

wooz

Method Summary

Modifier and Type	Method and Description
Point2D	getPivotalPoint() Returns the pixel on the acquisition CCD that is the pivotal point, or, which supplies the acquisition center.
void	setPivotalOffset(double dx, double dy) Sets an offset to the pivotal point of the acquisition CCD.

Method Detail

getPivotalPoint

Point2D getPivotalPoint()

Returns the pixel on the acquisition CCD that is the pivotal point, or, which supplies the acquisition center. On guiding, this is the pixel where the guide star image should reside.

Returns:

setPivotalOffset

void setPivotalOffset(double dx,
                      double dy)
               throws UnsupportedOperationException

Sets an offset to the pivotal point of the acquisition CCD. This is not possible for acquisition on a fiber-viewing camera, but can be used on (small) dither offsets.

Throws:

UnsupportedOperationException