; DECSHIFT ;--------------------------------------------------------------- ;! gives Y-coordinate shift of an image center from reference ;# ADVERB IMAGING ;----------------------------------------------------------------------- ;; Copyright (C) 1995-1996, 1999 ;; Associated Universities, Inc. Washington DC, USA. ;; ;; This program is free software; you can redistribute it and/or ;; modify it under the terms of the GNU General Public License as ;; published by the Free Software Foundation; either version 2 of ;; the License, or (at your option) any later version. ;; ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public ;; License along with this program; if not, write to the Free ;; Software Foundation, Inc., 675 Massachusetts Ave, Cambridge, ;; MA 02139, USA. ;; ;; Correspondence concerning AIPS should be addressed as follows: ;; Internet email: aipsmail@nrao.edu. ;; Postal address: AIPS Project Office ;; National Radio Astronomy Observatory ;; 520 Edgemont Road ;; Charlottesville, VA 22903-2475 USA ;----------------------------------------------------------------------- DECSHIFT LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- DECSHIFT Type: Adverb (Real array, 64 elements) Use: Specifies a change or shift of the declination (or Y) coordinate of an image, one per FIELD. Specifies a shift Northward (larger Y-pixel value) of the map center. The actual new center Declination is given by Dec(i) = Dec_0 + DECSHIFT(i) where Dec_0 is the declination of the reference point. If more than 64 fields are needed use BOXFILE to specify the shifts or field centers. Null Value: NONE ( 0 => no shift) ----------------------------------------------------------------