! Started logfile: 1820-274_S.log on Wed Oct 31 11:26:28 2007
observe 1820-274_S.edt
! Reading UV FITS file: 1820-274_S.edt
! AN table 1: 77 integrations on 105 of 105 possible baselines.
! Apparent sampling: 0.0272109 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1820-274
! 
! 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  2.23697e+09        8e+06          1        8e+06
!  02        2  2.26697e+09        8e+06          1        8e+06
!  03        3  2.35697e+09        8e+06          1        8e+06
!  04        4  2.37697e+09        8e+06          1        8e+06
! 
! Polarization(s): RR
! 
! Read 970 lines of history.
! 
! Reading 880 visibilities.
![@gonzo7-0.4 1820-274_S]
print "***********************************"
! *********************************** 
print "*** Using gonzo instruction set ***"
! *** Using gonzo instruction set *** 
print "***********************************"
! *********************************** 
float field_size
field_size = 1024
float field_cell
field_cell = 0.4
integer clean_niter
clean_niter = 50
float clean_gain
clean_gain = 0.03
float dynam
dynam = 7.0
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 0.400x0.400 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 1040 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 1040 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 1040 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 1040 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.905253Jy  sigma=0.012561
! Fit after  self-cal, rms=0.900506Jy  sigma=0.012561
! 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=1.484 mas, bmaj=36.13 mas, bpa=3.809 degrees
! Estimated noise=3504.02 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=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.0792321 Jy
! Total flux subtracted in 50 components = 0.0792321 Jy
! Clean residual min=-0.012911 max=0.022107 Jy/beam
! Clean residual mean=0.000008 rms=0.004824 Jy/beam
! Combined flux in latest and established models = 0.0792321 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 2 model components to the UV plane model.
! The established model now contains 2 components and 0.0792321 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.068857Jy  sigma=0.000935
! Fit after  self-cal, rms=0.068796Jy  sigma=0.000934
! 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=1.658 mas, bmaj=29.81 mas, bpa=3.123 degrees
! Estimated noise=1953.18 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 = 0.0150106 Jy
! Component: 100  -  total flux cleaned = 0.0125108 Jy
! Total flux subtracted in 100 components = 0.0125108 Jy
! Clean residual min=-0.004013 max=0.004001 Jy/beam
! Clean residual mean=0.000005 rms=0.001521 Jy/beam
! Combined flux in latest and established models = 0.0917429 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 26 components and 0.0917429 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.064592Jy  sigma=0.000876
! Fit after  self-cal, rms=0.064580Jy  sigma=0.000876
! 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 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   FD        1.00*    HH        1.00*    KB        1.01     KP        0.93     
!   LA        1.00*    MK        0.96     NL        1.00*    NY        1.00*    
!   OV        0.99     PT        1.00*    SC        1.00*    TC        1.00*    
!   WF        1.00*    WZ        1.00*    BR        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   FD        1.00*    HH        1.00*    KB        0.98     KP        1.07     
!   LA        1.00*    MK        0.93     NL        1.00*    NY        1.00*    
!   OV        0.96     PT        1.00*    SC        1.00*    TC        1.00*    
!   WF        1.00*    WZ        1.00*    BR        1.00*    
! 
! 
! Correcting IF 3.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   FD        1.00*    HH        1.00*    KB        1.00     KP        0.93     
!   LA        1.00*    MK        1.07     NL        1.00*    NY        1.00*    
!   OV        0.94     PT        1.00*    SC        1.00*    TC        1.00*    
!   WF        1.00*    WZ        1.00*    BR        1.00*    
! 
! 
! Correcting IF 4.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   FD        1.00*    HH        1.00*    KB        1.06     KP        0.98     
!   LA        1.00*    MK        1.00     NL        1.00*    NY        1.00*    
!   OV        0.92     PT        1.00*    SC        1.00*    TC        1.00*    
!   WF        1.00*    WZ        1.00*    BR        1.00*    
! 
! 
! Fit before self-cal, rms=0.064580Jy  sigma=0.000876
! Fit after  self-cal, rms=0.061253Jy  sigma=0.000868
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=1.678 mas, bmaj=29.6 mas, bpa=3.095 degrees
! Estimated noise=1900.57 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 = -0.00192867 Jy
! Component: 100  -  total flux cleaned = -0.00430105 Jy
! Total flux subtracted in 100 components = -0.00430105 Jy
! Clean residual min=-0.002018 max=0.001974 Jy/beam
! Clean residual mean=0.000000 rms=0.000686 Jy/beam
! Combined flux in latest and established models = 0.0874418 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 30 model components to the UV plane model.
! The established model now contains 56 components and 0.0874418 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.060966Jy  sigma=0.000864
! Fit after  self-cal, rms=0.060958Jy  sigma=0.000864
! 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 = -0.00172641 Jy
! Component: 100  -  total flux cleaned = -0.00251267 Jy
! Total flux subtracted in 100 components = -0.00251267 Jy
! Clean residual min=-0.001535 max=0.001535 Jy/beam
! Clean residual mean=-0.000000 rms=0.000535 Jy/beam
! Combined flux in latest and established models = 0.0849291 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 32 model components to the UV plane model.
! The established model now contains 79 components and 0.0849292 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.060802Jy  sigma=0.000862
! Fit after  self-cal, rms=0.061283Jy  sigma=0.000841
! Inverting map and beam 
! Estimated beam: bmin=1.681 mas, bmaj=29.53 mas, bpa=3.083 degrees
! Estimated noise=1921.36 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 = -0.00154969 Jy
! Component: 100  -  total flux cleaned = -0.00208174 Jy
! Total flux subtracted in 100 components = -0.00208174 Jy
! Clean residual min=-0.001195 max=0.001196 Jy/beam
! Clean residual mean=0.000000 rms=0.000408 Jy/beam
! Combined flux in latest and established models = 0.0828474 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 22 model components to the UV plane model.
! The established model now contains 101 components and 0.0828474 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.061174Jy  sigma=0.000839
! Fit after  self-cal, rms=0.061192Jy  sigma=0.000839
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1820-274_S
! Writing UV FITS file: 1820-274_S.uvf
! Writing 101 model components to file: 1820-274_S.mod
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.681 x 29.53 at 3.083 degrees (North through East)
! Clean map  min=-0.0030853  max=0.096078 Jy/beam
! Writing clean map to FITS file: 1820-274_S.fits
! Writing difmap environment to: 1820-274_S.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1820-274_S]
device 1820-274_Suv.ps/vps,1,2
! Attempting to open device: '1820-274_Suv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1820-274_Sim.ps/vps
! Attempting to open device: '1820-274_Sim.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=1.681 mas, bmaj=29.53 mas, bpa=3.083 degrees
! Estimated noise=1921.36 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.681 x 29.53 at 3.083 degrees (North through East)
! Clean map  min=-0.0030853  max=0.096078 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo7-0.4]
quit
! Quitting program
! Log file 1820-274_S.log closed on Wed Oct 31 11:26:44 2007