COOREF Type: Adverb (array(2)) Use: To specify the reference pixel number on two celestial coordinate axes. Null value: 0 Verbs: COODEFIN...Alter previous celestial axis pair description. Both COOREF = 0 => no change Tasks: FLATN......Re-grid multiple fields into one image incl sensitivity. COOREF is the output reference pixel, 0 => output image center.