! Started logfile: 1741-038_X.log on Wed May 14 14:14:35 2008
observe 1741-038_X.edt
! Reading UV FITS file: 1741-038_X.edt
! AN table 1: 49 integrations on 153 of 153 possible baselines.
! Apparent sampling: 0.0536214 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1741-038
! 
! 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 938 lines of history.
! 
! Reading 1608 visibilities.
![@gonzo8-0.1 1741-038_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 761 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 763 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 761 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 756 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=2.254896Jy  sigma=0.030508
! Fit after  self-cal, rms=2.252959Jy  sigma=0.030751
! 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=0.6761 mas, bmaj=1.841 mas, bpa=-11.69 degrees
! Estimated noise=2362.12 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 = 2.50029 Jy
! Total flux subtracted in 50 components = 2.50029 Jy
! Clean residual min=-0.201476 max=0.697293 Jy/beam
! Clean residual mean=-0.001225 rms=0.072402 Jy/beam
! Combined flux in latest and established models = 2.50029 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 1 model components to the UV plane model.
! The established model now contains 1 components and 2.50029 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.952152Jy  sigma=0.013394
! Fit after  self-cal, rms=0.952152Jy  sigma=0.013394
! Inverting map 
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.664301 Jy
! Total flux subtracted in 50 components = 0.664301 Jy
! Clean residual min=-0.119681 max=0.290769 Jy/beam
! Clean residual mean=-0.000559 rms=0.040804 Jy/beam
! Combined flux in latest and established models = 3.16459 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 14 model components to the UV plane model.
! The established model now contains 14 components and 3.16459 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.567147Jy  sigma=0.007642
! Fit after  self-cal, rms=0.566495Jy  sigma=0.007637
! 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=0.7238 mas, bmaj=1.81 mas, bpa=-14.33 degrees
! Estimated noise=1711.75 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 = 0.371958 Jy
! Component: 100  -  total flux cleaned = 0.572782 Jy
! Total flux subtracted in 100 components = 0.572782 Jy
! Clean residual min=-0.080604 max=0.100812 Jy/beam
! Clean residual mean=0.000092 rms=0.021634 Jy/beam
! Combined flux in latest and established models = 3.73737 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 26 model components to the UV plane model.
! The established model now contains 40 components and 3.73738 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.328457Jy  sigma=0.003825
! Fit after  self-cal, rms=0.327802Jy  sigma=0.003818
! 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 15 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.94     FD        0.96     GC        1.05     HH        1.00*    
!   HN        0.92     KK        0.99     KP        0.96     LA        0.96     
!   MC        1.00*    MK        1.01     NL        0.95     NY        1.00*    
!   ON        1.00*    OV        0.96     PT        1.07     SC        1.01     
!   WF        0.98     WZ        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 15 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.95     FD        0.95     GC        1.08     HH        1.00*    
!   HN        0.92     KK        1.03     KP        0.97     LA        0.97     
!   MC        1.00*    MK        0.99     NL        0.93     NY        1.00*    
!   ON        1.00*    OV        0.96     PT        1.13     SC        1.00     
!   WF        0.98     WZ        1.00*    
! 
! 
! Correcting IF 3.
!  A total of 21 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.97     FD        0.98     GC        1.10     HH        1.00*    
!   HN        0.93     KK        1.03     KP        1.00     LA        0.98     
!   MC        1.00*    MK        0.99     NL        0.95     NY        1.00*    
!   ON        1.00*    OV        0.98     PT        1.15     SC        1.04     
!   WF        1.10     WZ        1.00*    
! 
! 
! Correcting IF 4.
!  A total of 18 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.97     FD        0.97     GC        1.17     HH        1.00*    
!   HN        0.92     KK        1.01     KP        0.98     LA        0.99     
!   MC        1.00*    MK        0.97     NL        0.97     NY        1.00*    
!   ON        1.00*    OV        0.96     PT        1.20     SC        1.11     
!   WF        1.14     WZ        1.00*    
! 
! 
! Fit before self-cal, rms=0.327802Jy  sigma=0.003818
! Fit after  self-cal, rms=0.179632Jy  sigma=0.001728
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.7225 mas, bmaj=1.873 mas, bpa=-14.62 degrees
! Estimated noise=1739.62 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 = 0.0473206 Jy
! Component: 100  -  total flux cleaned = 0.0527186 Jy
! Total flux subtracted in 100 components = 0.0527186 Jy
! Clean residual min=-0.024192 max=0.025222 Jy/beam
! Clean residual mean=0.000261 rms=0.006553 Jy/beam
! Combined flux in latest and established models = 3.79009 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 10 model components to the UV plane model.
! The established model now contains 48 components and 3.79009 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.163867Jy  sigma=0.001576
! Fit after  self-cal, rms=0.163723Jy  sigma=0.001573
! 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 = 0.00091619 Jy
! Component: 100  -  total flux cleaned = 0.00090837 Jy
! Total flux subtracted in 100 components = 0.00090837 Jy
! Clean residual min=-0.024313 max=0.022845 Jy/beam
! Clean residual mean=0.000264 rms=0.006267 Jy/beam
! Combined flux in latest and established models = 3.791 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 9 model components to the UV plane model.
! The established model now contains 53 components and 3.791 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.159299Jy  sigma=0.001543
! Fit after  self-cal, rms=0.149081Jy  sigma=0.001357
! Inverting map and beam 
! Estimated beam: bmin=0.7218 mas, bmaj=1.875 mas, bpa=-14.79 degrees
! Estimated noise=1741.45 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 = 0.0114 Jy
! Component: 100  -  total flux cleaned = 0.00979873 Jy
! Total flux subtracted in 100 components = 0.00979873 Jy
! Clean residual min=-0.015083 max=0.016355 Jy/beam
! Clean residual mean=0.000064 rms=0.003961 Jy/beam
! Combined flux in latest and established models = 3.8008 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 10 model components to the UV plane model.
! The established model now contains 58 components and 3.8008 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.145304Jy  sigma=0.001326
! Fit after  self-cal, rms=0.145216Jy  sigma=0.001324
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1741-038_X
! Writing UV FITS file: 1741-038_X.uvf
! Writing 58 model components to file: 1741-038_X.mod
! wwins: Wrote 1 windows to 1741-038_X.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.7218 x 1.875 at -14.79 degrees (North through East)
! Clean map  min=-0.015116  max=3.1621 Jy/beam
! Writing clean map to FITS file: 1741-038_X.fits
! Writing difmap environment to: 1741-038_X.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1741-038_X]
device 1741-038_Xuv.ps/vps,1,2
! Attempting to open device: '1741-038_Xuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1741-038_Xim.ps/vps
! Attempting to open device: '1741-038_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=0.7218 mas, bmaj=1.875 mas, bpa=-14.79 degrees
! Estimated noise=1741.45 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.7218 x 1.875 at -14.79 degrees (North through East)
! Clean map  min=-0.015116  max=3.1621 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo8-0.1]
quit
! Quitting program
! Log file 1741-038_X.log closed on Wed May 14 14:14:42 2008