; EPOSWTCH
;---------------------------------------------------------------
;! Switches between B1950 and J2000 coordinates in header
;# Verb Catalog Coordinates
;-----------------------------------------------------------------------
;;  Copyright (C) 1995, 1996
;;  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
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;;
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;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;  GNU General Public License for more details.
;;
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;;  License along with this program; if not, write to the Free
;;  Software Foundation, Inc., 675 Massachusetts Ave, Cambridge,
;;  MA 02139, USA.
;;
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;;         Postal address: AIPS Project Office
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
EPOSWTCH  LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
EPOSWTCH:  Verb to switch between B1950 and J2000 coordinates
USERID     -32000.0     32000.0    User ID.  0 => current user
                                     32000 => any user.
INNAME                             Image name(name).
INCLASS                            Image name(class).
INSEQ           0.0      9999.0    Image name(seq. #). 0=>high
INDISK          0.0         9.0    Disk drive #. 0 => any.
----------------------------------------------------------------
EPOSWTCH
Type: Verb
Use:  EPOSWTCH may be used to swithc the epoch of the coordinates in the
      image or UV header from B1950 (or whatever) to J2000 and back to
      B1950.  The conversion is of adequate accuracy for normal imaging
      but should not be used in astrometric circumstances.  The
      conversion assumes that it may be represented by a shift of the
      coordinates of the reference pixel and a slight rotation.  This is
      not correct at the highest accuracies.
Adverbs:
  USERID......User ID of owner of image.  0 => current user,
                32000 => any user.
  INNAME......Image name(name).       Standard defaults.
  INCLASS.....Image name(class).      Standard defaults.
  INSEQ.......Image name(seq. #).     0 => highest.
  INDISK......Disk drive # of image.  0 => any.
----------------------------------------------------------------
