! Started logfile: 1656+348_X.log on Wed May 14 14:02:52 2008
observe 1656+348_X.edt
! Reading UV FITS file: 1656+348_X.edt
! AN table 1: 56 integrations on 153 of 153 possible baselines.
! Apparent sampling: 0.0701447 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1656+348
! 
! There are 4 IFs, and a total of 4 channels:
! 
!  IF  Channel    Frequency  Freq offset  Number of   Overall IF
!       origin    at origin  per channel   channels    bandwidth
!  ------------------------------------------------------------- (Hz)
!  01        1  8.40997e+09        8e+06          1        8e+06
!  02        2  8.47997e+09        8e+06          1        8e+06
!  03        3  8.79497e+09        8e+06          1        8e+06
!  04        4  8.89997e+09        8e+06          1        8e+06
! 
! Polarization(s): RR
! 
! Read 946 lines of history.
! 
! Reading 2404 visibilities.
![@gonzo8-0.1 1656+348_X]
print "***********************************"
! *********************************** 
print "*** Using gonzo instruction set ***"
! *** Using gonzo instruction set *** 
print "***********************************"
! *********************************** 
float field_size
field_size = 1024
float field_cell
field_cell = 0.1
integer clean_niter
clean_niter = 50
float clean_gain
clean_gain = 0.03
float dynam
dynam = 8.0
float win_mult
win_mult = 1.8
float solint
solint = 3.6/6.0
logical doflt
doflt = true
logical doamp
float new_peak
float flux_cutoff
mapsize field_size,field_cell
! Map grid = 1024x1024 pixels with 0.100x0.100 milli-arcsec cellsize.
select
! Selecting polarization: RR,  channels: 1..4
! Reading IF 1 channels: 1..1
! Reading IF 2 channels: 2..2
! Reading IF 3 channels: 3..3
! Reading IF 4 channels: 4..4
startmod
! Applying default point source starting model.
! Performing phase self-cal
! Adding 1 model components to the UV plane model.
! The established model now contains 1 components and 1 Jy
! 
! Correcting IF 1.
!  A total of 931 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 940 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 940 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 955 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.846278Jy  sigma=0.016867
! Fit after  self-cal, rms=0.843575Jy  sigma=0.016896
! clrmod: Cleared the established, tentative and continuum models.
! Redundant starting model cleared.
uvweight 2,-1
! Uniform weighting binwidth: 2 (pixels).
! Gridding weights will be scaled by errors raised to the power -1.
! Radial weighting is not currently selected.
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=1.122 mas, bmaj=2.05 mas, bpa=-4.639 degrees
! Estimated noise=3562.46 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! Added new window around map position (0, 0).
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.108523 Jy
! Total flux subtracted in 50 components = 0.108523 Jy
! Clean residual min=-0.017041 max=0.035925 Jy/beam
! Clean residual mean=-0.000237 rms=0.005595 Jy/beam
! Combined flux in latest and established models = 0.108523 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 7 model components to the UV plane model.
! The established model now contains 7 components and 0.108523 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.064895Jy  sigma=0.001298
! Fit after  self-cal, rms=0.064886Jy  sigma=0.001298
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Uniform Weighting CLEAN ***"
! *** Finished Uniform Weighting CLEAN *** 
print "****************************************"
! **************************************** 
uvweight 0,-1
! Uniform weighting is not currently selected.
! Gridding weights will be scaled by errors raised to the power -1.
! Radial weighting is not currently selected.
win_mult = win_mult * 1.6
clean_niter = clean_niter * 2
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=1.752 mas, bmaj=2.305 mas, bpa=6.737 degrees
! Estimated noise=1987.06 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.0439407 Jy
! Component: 100  -  total flux cleaned = 0.0607638 Jy
! Total flux subtracted in 100 components = 0.0607638 Jy
! Clean residual min=-0.007755 max=0.009177 Jy/beam
! Clean residual mean=-0.000052 rms=0.002879 Jy/beam
! Combined flux in latest and established models = 0.169287 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 35 model components to the UV plane model.
! The established model now contains 38 components and 0.169287 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.032002Jy  sigma=0.000617
! Fit after  self-cal, rms=0.031942Jy  sigma=0.000616
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Natural Weighting CLEAN ***"
! *** Finished Natural Weighting CLEAN *** 
print "****************************************"
! **************************************** 
gscale true
! Performing overall amplitude self-cal
! 
! Correcting IF 1.
!  A total of 9 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.08     FD        0.92     GC        1.22     HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.91     LA        0.99     
!   MC        1.00*    MK        0.89     NL        1.02     NY        1.00*    
!   ON        1.00*    OV        1.06     PT        0.89     SC        1.00*    
!   WF        1.05     WZ        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 21 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.02     FD        0.94     GC        1.00*    HH        1.00*    
!   HN        1.15     KK        1.00*    KP        0.93     LA        0.94     
!   MC        1.00*    MK        1.01     NL        1.12     NY        1.00*    
!   ON        1.00*    OV        0.94     PT        0.96     SC        1.00*    
!   WF        1.00*    WZ        1.00*    
! 
! 
! Correcting IF 3.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.03     FD        0.96     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.93     LA        0.95     
!   MC        1.00*    MK        0.95     NL        1.15     NY        1.00*    
!   ON        1.00*    OV        1.02     PT        0.95     SC        1.00*    
!   WF        1.00*    WZ        1.00*    
! 
! 
! Correcting IF 4.
!  A total of 15 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00     FD        0.97     GC        1.00*    HH        1.00*    
!   HN        1.00*    KK        1.00*    KP        0.98     LA        0.99     
!   MC        1.00*    MK        0.82     NL        1.00*    NY        1.00*    
!   ON        1.00*    OV        0.95     PT        0.92     SC        1.00*    
!   WF        1.00*    WZ        1.00*    
! 
! 
! Fit before self-cal, rms=0.031942Jy  sigma=0.000616
! Fit after  self-cal, rms=0.028402Jy  sigma=0.000560
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=1.826 mas, bmaj=2.346 mas, bpa=7.664 degrees
! Estimated noise=2070.39 mJy/beam.
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.000121148 Jy
! Component: 100  -  total flux cleaned = 0.00031373 Jy
! Total flux subtracted in 100 components = 0.00031373 Jy
! Clean residual min=-0.004270 max=0.006389 Jy/beam
! Clean residual mean=-0.000020 rms=0.001519 Jy/beam
! Combined flux in latest and established models = 0.169601 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 7 model components to the UV plane model.
! The established model now contains 45 components and 0.169601 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.028229Jy  sigma=0.000557
! Fit after  self-cal, rms=0.028265Jy  sigma=0.000556
! Inverting map 
dynam = dynam - 1.0
doamp = true
solint = solint * (6.0/3.6)
flux_cutoff = imstat(rms) * dynam
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 9.13291e-05 Jy
! Component: 100  -  total flux cleaned = 0.000192696 Jy
! Total flux subtracted in 100 components = 0.000192696 Jy
! Clean residual min=-0.004338 max=0.006252 Jy/beam
! Clean residual mean=-0.000019 rms=0.001488 Jy/beam
! Combined flux in latest and established models = 0.169793 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 7 model components to the UV plane model.
! The established model now contains 48 components and 0.169793 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.028154Jy  sigma=0.000554
! Fit after  self-cal, rms=0.026354Jy  sigma=0.000508
! Inverting map and beam 
! Estimated beam: bmin=1.821 mas, bmaj=2.347 mas, bpa=8.316 degrees
! Estimated noise=2082.96 mJy/beam.
doamp = false
solint = solint / (6.0/3.6)
flux_cutoff = imstat(rms) * dynam
repeat
  if (peak(flux) > flux_cutoff) peakwin win_mult
  clean clean_niter,clean_gain
  flux_cutoff = imstat(rms) * dynam
  selfcal doamp, doflt, solint
  new_peak = peak(flux)
  until(new_peak<=flux_cutoff)
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.00052963 Jy
! Component: 100  -  total flux cleaned = 0.000772609 Jy
! Total flux subtracted in 100 components = 0.000772609 Jy
! Clean residual min=-0.004197 max=0.004913 Jy/beam
! Clean residual mean=0.000006 rms=0.001254 Jy/beam
! Combined flux in latest and established models = 0.170566 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 8 model components to the UV plane model.
! The established model now contains 51 components and 0.170566 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.026244Jy  sigma=0.000506
! Fit after  self-cal, rms=0.026244Jy  sigma=0.000506
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1656+348_X
! Writing UV FITS file: 1656+348_X.uvf
! Writing 51 model components to file: 1656+348_X.mod
! wwins: Wrote 1 windows to 1656+348_X.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.821 x 2.347 at 8.316 degrees (North through East)
! Clean map  min=-0.0041324  max=0.148 Jy/beam
! Writing clean map to FITS file: 1656+348_X.fits
! Writing difmap environment to: 1656+348_X.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1656+348_X]
device 1656+348_Xuv.ps/vps,1,2
! Attempting to open device: '1656+348_Xuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1656+348_Xim.ps/vps
! Attempting to open device: '1656+348_Xim.ps/vps'
uvweight 0,-1
! Uniform weighting is not currently selected.
! Gridding weights will be scaled by errors raised to the power -1.
! Radial weighting is not currently selected.
loglevs -1,2048,2
! The new contour levels are:
!  -1 1 2 4 8 16 32 64 128 256 512 1024 2048
cmul = imstat(rms)*3
! Inverting map and beam 
! Estimated beam: bmin=1.821 mas, bmaj=2.347 mas, bpa=8.316 degrees
! Estimated noise=2082.96 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.821 x 2.347 at 8.316 degrees (North through East)
! Clean map  min=-0.0041324  max=0.148 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo8-0.1]
quit
! Quitting program
! Log file 1656+348_X.log closed on Wed May 14 14:02:59 2008