add_offset_wcs# lsst.images.fits.add_offset_wcs(header, *, x, y, key='A')# Add a trivial FITS WCS to a header that applies the appropriate offset to map FITS array coordinates to a logical pixel grid. Parameters: header (Header) – Header to update in-place. x (int | float) – Logical coordinate of the first column. y (int | float) – Logical coordinate of the first row. key (str, default: 'A') – Single-character suffix for this WCS. Return type: None