- zerocombine -- Combine and process mosaic zero level exposures
- zflatfield -- Determine a flat field.
- zones -- Determine electron temps & densities in 3-zone nebula
- zoom -- Zoom in on the image (change magnification)
- zvel -- Run emsao and xcsao on list of spectra
- zwavecal -- Create new wavelength dispersion based on WAVE spectra.