The noise will be greater in the mosaic's peripheral areas, having received less exposure time. Mosaics are made and displayed for each row, except the last. At the end of each cycle of 19 frames the full mosaic of nine target frames is created and displayed instead. On the second and subsequent cycles the full mosaic is added into a master mosaic of improving signal to noise. Uses the Starlink NDF format.
History is recorded within the data files.
The title of the data is propagated through intermediate files to the mosaic. Error propagation is not used.