Keywords: imager

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## CLEAN Language

      character(len=20) :: v_clean     ! CLEAN
      ! CLEAN Language versions   v_clean
      v_clean = '4.0-01 08-Mar-2018' ! First IMAGER release with new Variable names (may still change)
      v_clean = '4.1-01 08-Mar-2018' ! IMAGER release with Self Calibration commands
      v_clean = '4.1-02 15-Mar-2018' ! Bug correction in Self Calibration commands
      v_clean = '4.1-02 02-May-2018' ! Split with CALIBRATE\ language
      v_clean = '4.2-01 03-Jul-2018' ! Add /RANGE options to UV_FILTER and UV_BASELINE
      v_clean = '4.3-01 05-Sep-2018' ! Minor change in SHOW NOISE to identify properly Dirty and Clean data
      v_clean = '4.3-02 05-Nov-2018' ! Debug MX, improve MULTI and cleanup messages
      v_clean = '4.3-03 14-Nov-2018' ! Add the UV_TRIM command, support READ CCT /RANGE
      v_clean = '4.4-01 14-Jan-2019' ! Add the UV_HANNING command
      v_clean = '4.4-02 17-Jan-2019' ! Add the UV_EXTRACT command
      v_clean = '4.4-03 04-Feb-2019' ! Add the /FILE option to UV_BASELINE,UV_FILTER, UV_SPLIT and UV_SORT
      v_clean = '4.4-04 07-Feb-2019' ! Bug correction in UV_MAP for Phase offset mosaics
      v_clean = '4.4-05 08-Feb-2019' ! UV_TRIM /FILE syntax
      v_clean = '4.4-06 12-Feb-2019' ! Protect against incomplete UV data (Nvisi < dim(2))
      v_clean = '4.4-07 13-Feb-2019' ! Operational version of UV_SORT /FILE (still slow)
      v_clean = '4.4-08 14-Feb-2019' ! Operational version of UV_SORT /FILE (reasonable now)
      v_clean = '4.4-09 15-Feb-2019' ! UV_TIME /FILE syntax
      v_clean = '4.4-10 25-Feb-2019' ! UV_RESAMPLE, UV_COMPRESS, UV_HANNING /FILE syntax
      v_clean = '4.5-01 27-Feb-2019' ! Move STOKES command to ADVANCED\ language
      v_clean = '4.5-02 14-Mar-2019' ! Improve the STATISTIC and SUPPORT commands behaviour
      v_clean = '4.5-03 29-Mar-2019' ! Support for SHOW SOURCES
      v_clean = '5.0-01 05-Apr-2019' ! Remove CLARK, ..., SDI commands, leave only CLEAN
      v_clean = '5.0-02 05-Apr-2019' ! Move COLOR to CLEAN\
      v_clean = '5.0-03 29-Apr-2019' ! Option /CONT for UV_MAP
      v_clean = '5.0-04 02-May-2019' ! BUFFERS command
      v_clean = '5.0-05 06-May-2019' ! /NOPAUSE option to VIEW command
      v_clean = '5.0-06 07-May-2019' ! UV_STAT DEFAULT and associated variables
      v_clean = '5.0-07 25-May-2019' ! /INDEX option for UV_MAP
      v_clean = '5.1-01 05-Jun-2019' ! Command UV_REWEIGHT re-written
      v_clean = '5.1-02 15-Jun-2019' ! UV_EXTRACT /FIELDS
      v_clean = '5.1-03 25-Jun-2019' ! UV_FIELDS command
      v_clean = '5.1-04 03-Jul-2019' ! UV_COMPRESS /CONTINUUM option
      v_clean = '5.1-05 04-Jul-2019' ! Remove obsolete /SELF option of UV_MAP & UV_RESTORE
      v_clean = '5.2-01 03-Sep-2019' ! Move STATISTIC command out of this language
      v_clean = '5.2-02 13-Sep-2019' ! Move UV_SORT command out of this language
      v_clean = '5.2-03 25-Sep-2019' ! UV_FLAG bug correction
      v_clean = '5.2-04 07-Oct-2019' ! UV_MAP 'Map_Center' bug correction (header not updated)
      v_clean = '5.2-05 10-Oct-2019' ! WRITE does not accept ambiguities
      v_clean = '5.2-06 10-Oct-2019' ! VIEW with no argument just re-displays
      v_clean = '5.3-01 10-Oct-2019' ! Support for the CONTINUUM image
      v_clean = '5.3-02 11-Oct-2019' ! MAP_REPROJECT, MAP_COMBINE commands (+syntax MAP_RESAMPLE)
      v_clean = '5.3-03 13-Oct-2019' ! SHOW /NOPAUSE and VIEW /OVERLAY commands
      v_clean = '5.3-04 16-Oct-2019' ! SHOW /SIDE instead of /NOPAUSE and new MASK THRESHOLD command
      v_clean = '5.3-05 06-Nov-2019' ! /FILE option of UV_CHECK
      v_clean = '5.3-06 20-Nov-2019' ! /FILE option of UV_SHIFT
      v_clean = '5.3-07 06-Feb-2020' ! Bug correction for MAP_COMPRESS syntax
      v_clean = '5.3-08 20-Feb-2020' ! Size computation for Large data set may exceed 2GBytes
      v_clean = '5.3-09 21-Feb-2020' ! Bug correction for Mosaic in Robust weighting
      v_clean = '5.3-10 24-Feb-2020' ! /LIKE option of MAP_RESAMPLE
      v_clean = '5.3-11 05-Mar-2020' ! Bug correction in MULTI
      v_clean = '5.3-12 05-Mar-2020' ! Bug correction about buffers selected by UV_SELECT and/or UV_MAP /CONT
      v_clean = '5.3-13 11-Mar-2020' ! Bug correction in MAP_RESAMPLE (overflow of channel ranges)
      v_clean = '5.3-14 25-Mar-2020' ! Remove a restriction in MAP_RESAMPLE (overflow of channel ranges)
      v_clean = '5.3-15 25-Mar-2020' ! Improve the /FLUX display in CLEAN command
      v_clean = '5.3-16 13-May-2020' ! Improve the WRITE MODEL command
      v_clean = '5.4-01 21-May-2020' ! /FOR option of SPECIFY
      v_clean = '5.4-02 09-Jul-2020' ! Command DISCARD
      v_clean = '5.4-03 01-Sep-2020' ! Option /THRESHOLD for command FIT
      v_clean = '5.4-04 03-Sep-2020' ! Improve UV_TIME command : more consistent defaults
      v_clean = '5.4-05 11-Sep-2020' ! Bug correction in MASK APPLY (Blanking was not updated)
      v_clean = '5.4-06 15-Sep-2020' ! Optimize MAP_RESAMPLE if no resampling needed
      v_clean = '5.5-01 26-Oct-2020' ! Command UV_SMOOTH
      v_clean = '5.6-01 07-Dec-2020' ! Command CCT_MERGE and CCT_CONVERT
      v_clean = '5.6-02 14-Dec-2020' ! STATISTIC /EDGE option
      v_clean = '5.6-03 14-Dec-2020' ! /ARES Argument must be Real array
      v_clean = '5.6-04 14-Jan-2021' ! Debug VIEW and SHOW 4-D Beams
      v_clean = '5.6-05 19-Jan-2021' ! Make sure UV_MAP works on Mosaics even in Memory limited conditions
      v_clean = '5.7-01 31-Jan-2021' ! Command CCT_CLEAN
      v_clean = '5.7-02 31-Mar-2021' ! FIT command make one fit per pointing
      v_clean = '5.7-03 01-Apr-2021' ! MULTISCALE is now operational for Mosaics
      v_clean = '5.7-04 01-Jun-2021' ! Bug correction for MULTISCALE in 4-D Beams
      v_clean = '5.7-05 01-Jun-2021' ! More flexible FIT command
      v_clean = '5.8-01 17-Jun-2021' ! SPECIFY FREQUENCIES command for VLA data
      v_clean = '5.8-02 28-Jun-2021' ! UV_SHIFT bug correction for "false" mosaics (ID and MOFF columns)
      v_clean = '5.8-03 28-Jun-2021' ! UV_SORT bug correction for /FILE option
      v_clean = '6.0-00 21-Oct-2021' ! Split Language CLEAN\ into CLEAN\ and DISPLAY\ (no \at end please...)
      v_clean = '6.0-01 09-Nov-2021' ! Bug correction in READ UV: undefine PREVIEW%, avoid write UV data in WRITE *
      v_clean = '6.1-00 17-Nov-2021' ! Add /JVM option to command FIT
      v_clean = '6.1-01 17-Nov-2021' ! CLEAN Variable ? syntax
      v_clean = '6.1-02 17-Nov-2021' ! UV_MAP Variable ? syntax
      v_clean = '6.1-03 19-Nov-2021' ! UV_REWEIGHT syntax bug correction
      v_clean = '6.1-04 23-Nov-2021' ! Use the BEAM_JVM value in UV_RESTORE - (Defaults to 1 if not available)
      v_clean = '6.2-00 02-Dec-2021' ! Add the /LIKE option to UV_RESAMPLE
      v_clean = '6.2-01 16-Dec-2021' ! Optimize parallel processing
      v_clean = '6.2-02 17-Dec-2021' ! Debug MAP_BEAM_STEP = 1 mode
      v_clean = '6.2-03 17-Dec-2021' ! UV_CHECK beam works better
      v_clean = '6.2-04 18-Dec-2021' ! UV_TIME now works for UV tables with per-channel weights
      v_clean = '6.2-05 20-Dec-2021' ! UV_RESAMPLE must reset BEAM_RANGES variable
      v_clean = '6.3-00 21-Dec-2021' ! Use new way of defining Dirty Beams number and properties.
      v_clean = '6.3-01 03-Jan-2021' ! Parallel programming optimization for CLEAN
      v_clean = '6.3-02 06-Jan-2022' ! Allow direct READ of FITS data cubes.
      v_clean = '6.3-03 07-Jan-2022' ! READ /PLANES option now works as expected
      v_clean = '6.3-04 11-Jan-2022' ! UV_FIELD bug correction
      v_clean = '6.3-05 18-Jan-2022' ! READ SINGLE bug correction
      v_clean = '6.3-06 20-Jan-2022' ! READ  with FITS format improvement
      v_clean = '6.3-07 08-Feb-2022' ! Allow to use Fixed beamsize in UV_RESTORE
      v_clean = '6.3-08 08-Feb-2022' ! CLEAN_STOP syntax in CLEAN
      v_clean = '6.3-09 07-Mar-2022' ! Allow WRITE BEAM /APPEND in all cases
      v_clean = '6.3-10 07-Mar-2022' ! Bug correction in beam derivation if ANGLE is specified
      v_clean = '6.3-11 09-Mar-2022' ! Bug correction in CCT_MERGE : Concatenation was improper
      v_clean = '6.4-00 18-Mar-2022' ! Implement the /RESTART option of CLEAN
      v_clean = '6.4-01 22-Mar-2022' ! Flag out of band channels in UV_RESAMPLE
      v_clean = '6.4-02 03-May-2022' ! /RESET option of UV_FILTER
      v_clean = '6.4-03 10-May-2022' ! Bug correction in UV_SHIFT and PROPER_MOTION
      v_clean = '6.4-04 02-Jun-2022' ! Make SPECIFY TELESCOPE work on Images too
      v_clean = '6.4-05 09-Jun-2022' ! Debug UV_FLAG command
      v_clean = '6.4-06 29-Jun-2022' ! Make UV_EXTRACT work with Random Frequency Axis
      v_clean = '6.4-07 29-Jun-2022' ! Make READ handle properly Random Frequency Axis in UVFITS format
      v_clean = '6.5-00 05-Sep-2022' ! Add the /ASYMMETRIC option of MAP_SMOOTH and UV_SMOOTH
      v_clean = '6.5-01 27-Sep-2022' ! Add the UNIT specifier to MAP_REPROJECT
      v_clean = '6.5-02 07-Oct-2022' ! Bug correction in Beam Consistency checking
      v_clean = '6.5-03 10-Oct-2022' ! Use a Channel mask array to hide line-emitting parts of the spectrum
      v_clean = '6.5-04 07-Nov-2022' ! Make sure MAP_CENTER is also used for Mosaics
      v_clean = '6.5-05 14-Nov-2022' ! Bug in UV_SHIFT: Pointing center was incorrectly reset in /FILE option for single fields
      v_clean = '6.5-06 14-Nov-2022' ! Bug in UV_MOSAIC: Wrong identification of arguments
      v_clean = '6.5-07 14-Nov-2022' ! Make sure MAP_CENTER is never forgotten (Mosaic stills needs checking)
      v_clean = '6.5-08 15-Nov-2022' ! UV_TIME crashed on Mosaics