center_from_ta_image

jwst.targ_centroid.targ_centroid.center_from_ta_image(ta_image, ref_center, subarray_origin=(1, 1))

Determine the center of a point source from a TA image.

Parameters:

ta_imagendarray

2D target acquisition image data.

ref_centertuple of float

(x_ref, y_ref) reference center position in subarray coordinates, zero-indexed. Dither position comes out of the WCS transform already in subarray coordinates.

subarray_origintuple of int, optional

(xstart, ystart) 1-indexed origin of the subarray in full-frame coordinates. Default is (1, 1) for full frame.

Returns:

x_center, y_centerfloat

Fitted x, y center position in full-frame detector coordinates.

x_center_subarray, y_center_subarrayfloat

Fitted x, y center position in subarray coordinates.