text: /* $Id$  */
  /*--------------------------------------------------------------------*/
  /*;  Copyright (C) 2021                                               */
  /*;  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 Obit should be addressed as follows:   */
  /*;         Internet email: bcotton@nrao.edu.                         */
  /*;         Postal address: William Cotton                            */
  /*;                         National Radio Astronomy Observatory      */
  /*;                         520 Edgemont Road                         */
  /*;                         Charlottesville, VA 22903-2475 USA        */
  /*--------------------------------------------------------------------*/
  /*  Define the basic components of the ObitImageMF structure      */
  /*  This is intended to be included in a class structure definition   */
  /**
   * \file ObitImageMFDef.h
   * ObitImageMF structure members for derived classes.
   */
  #include "ObitImageDef.h"  /* Parent class definitions */
  /** Maximum order of the imaging 
      Spectral index only = 1, plus curvature = 2 */
  olong maxOrder;
  /** Current order of the imaging 
      Spectral index only = 1, plus curvature = 2 */
  olong curOrder;
  /** Reference frequency */
  odouble refFreq;
  /** Number of coarse frequency planes */
  olong nSpec;
  /** Arrays of start and finish IFs (0-rel), per coarse channel */
  olong *BIFSpec, *EIFSpec;
  /** Arrays of start and finish Channels (0-rel), per coarse channel */
  olong *BChanSpec, *EChanSpec;
  /** Arrays of Center Frequency, per coarse channel */
  odouble *specFreq;
  /** Arrays of low frequency, per coarse channel */
  odouble *specFreqLo;
  /** Arrays of high frequency, per coarse channel */
  odouble *specFreqHi;
  /** Spectral index correction applied to data making image (wrt alphaRefF) */
  ofloat alpha;
  /** Reference frequency (Hz) for spectral index */
  odouble alphaRefF;
  