stella.util

Interface MomentsGeometric

All Known Implementing Classes:

E2VGeometry, MultiModeWifsipGeometry, WifsipMaster.WifsipGeometry

public interface MomentsGeometric

Simple interface defining the capabilities to calculate a readout-box and a fits-extension from a focus star position in absolute coordinates.

Method Summary

Modifier and Type	Method and Description
Rectangle	getBox(int xpix, int ypix) Returns the rectangle that defines the readout-area on a ccd from the focus star position.
int	getExtension(int xpix, int ypix) Returns the extension the moment focusser should use.
Rectangle	getMomentsFrame(int xpix, int ypix) Returns the moment frame, which should be not bigger than the readout box.
boolean	withinBounds(int xpix, int ypix) Returns true, if the requested position appears feasible for placing a read-out window around it.

Method Detail

withinBounds

boolean withinBounds(int xpix,
                     int ypix)

Returns true, if the requested position appears feasible for placing a read-out window around it.

Parameters:

xpix -

ypix -

Returns:

True, if the position can be reached plus some safety margin.

getBox

Rectangle getBox(int xpix,
                 int ypix)

Returns the rectangle that defines the readout-area on a ccd from the focus star position. A default implementation may simple return a rectangle with an object-specific box size around it. On multi-amplifier CCD, this might be a little bit more tricky.

getExtension

int getExtension(int xpix,
                 int ypix)

Returns the extension the moment focusser should use. If unsure, return 0 for the first extension or -1 to let the focusser decide.

getMomentsFrame

Rectangle getMomentsFrame(int xpix,
                          int ypix)

Returns the moment frame, which should be not bigger than the readout box.