! Started logfile: 1820-274_X.log on Wed Oct 31 13:09:37 2007
observe 1820-274_X.edt
! Reading UV FITS file: 1820-274_X.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  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 969 lines of history.
! 
! Reading 880 visibilities.
![@gonzo7-0.1 1820-274_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 = 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 0.100x0.100 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 1040 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 1074 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=0.933650Jy  sigma=0.012536
! Fit after  self-cal, rms=0.905119Jy  sigma=0.013557
! 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=0.4279 mas, bmaj=8.976 mas, bpa=3.247 degrees
! Estimated noise=3475 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 = 0.0756115 Jy
! Total flux subtracted in 50 components = 0.0756115 Jy
! Clean residual min=-0.012708 max=0.021093 Jy/beam
! Clean residual mean=0.000008 rms=0.005016 Jy/beam
! Combined flux in latest and established models = 0.0756115 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 0.0756115 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.065402Jy  sigma=0.000920
! Fit after  self-cal, rms=0.065374Jy  sigma=0.000919
! 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=0.489 mas, bmaj=7.509 mas, bpa=3.179 degrees
! Estimated noise=1965.96 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 = 0.0114045 Jy
! Component: 100  -  total flux cleaned = 0.0137929 Jy
! Total flux subtracted in 100 components = 0.0137929 Jy
! Clean residual min=-0.003663 max=0.003665 Jy/beam
! Clean residual mean=0.000004 rms=0.001342 Jy/beam
! Combined flux in latest and established models = 0.0894044 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 23 model components to the UV plane model.
! The established model now contains 24 components and 0.0894044 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.061321Jy  sigma=0.000861
! Fit after  self-cal, rms=0.061298Jy  sigma=0.000861
! 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        1.04     KP        0.95     
!   LA        1.00*    MK        0.97     NL        1.00*    NY        1.00*    
!   OV        1.00     PT        1.00*    SC        1.00*    TC        1.00*    
!   WF        1.00*    WZ        1.00*    BR        1.00*    
! 
! 
! Correcting IF 2.
!  A total of 81 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   FD        0.00*    HH        0.00*    KB        0.00*    KP        0.00*    
!   LA        0.00*    MK        0.00*    NL        0.00*    NY        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   WF        0.00*    WZ        0.00*    BR        0.00*    
! 
! 
! 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        0.93     KP        1.10     
!   LA        1.00*    MK        0.99     NL        1.00*    NY        1.00*    
!   OV        0.95     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        1.01     KP        0.90     
!   LA        1.00*    MK        0.93     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*    
! 
! 
! Fit before self-cal, rms=0.061298Jy  sigma=0.000861
! Fit after  self-cal, rms=0.060374Jy  sigma=0.000869
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=0.4592 mas, bmaj=7.744 mas, bpa=3.16 degrees
! Estimated noise=2098.32 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 = 0.0019856 Jy
! Component: 100  -  total flux cleaned = 0.00171193 Jy
! Total flux subtracted in 100 components = 0.00171193 Jy
! Clean residual min=-0.002005 max=0.002005 Jy/beam
! Clean residual mean=0.000001 rms=0.000664 Jy/beam
! Combined flux in latest and established models = 0.0911164 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 41 model components to the UV plane model.
! The established model now contains 65 components and 0.0911164 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.060006Jy  sigma=0.000864
! Fit after  self-cal, rms=0.060007Jy  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 = 0.000622289 Jy
! Component: 100  -  total flux cleaned = 0.000512308 Jy
! Total flux subtracted in 100 components = 0.000512308 Jy
! Clean residual min=-0.001641 max=0.001619 Jy/beam
! Clean residual mean=0.000000 rms=0.000549 Jy/beam
! Combined flux in latest and established models = 0.0916287 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 38 model components to the UV plane model.
! The established model now contains 93 components and 0.0916287 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.059809Jy  sigma=0.000861
! Fit after  self-cal, rms=0.059343Jy  sigma=0.000845
! Inverting map and beam 
! Estimated beam: bmin=0.4588 mas, bmaj=7.743 mas, bpa=3.163 degrees
! Estimated noise=2107.85 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 = -0.00243171 Jy
! Component: 100  -  total flux cleaned = -0.00343381 Jy
! Total flux subtracted in 100 components = -0.00343381 Jy
! Clean residual min=-0.001573 max=0.001557 Jy/beam
! Clean residual mean=0.000000 rms=0.000520 Jy/beam
! Combined flux in latest and established models = 0.0881949 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 24 model components to the UV plane model.
! The established model now contains 113 components and 0.0881949 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.059149Jy  sigma=0.000843
! Fit after  self-cal, rms=0.059145Jy  sigma=0.000843
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1820-274_X
! Writing UV FITS file: 1820-274_X.uvf
! Writing 113 model components to file: 1820-274_X.mod
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.4588 x 7.743 at 3.163 degrees (North through East)
! Clean map  min=-0.0042697  max=0.090636 Jy/beam
! Writing clean map to FITS file: 1820-274_X.fits
! Writing difmap environment to: 1820-274_X.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1820-274_X]
device 1820-274_Xuv.ps/vps,1,2
! Attempting to open device: '1820-274_Xuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1820-274_Xim.ps/vps
! Attempting to open device: '1820-274_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=0.4588 mas, bmaj=7.743 mas, bpa=3.163 degrees
! Estimated noise=2107.85 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 0.4588 x 7.743 at 3.163 degrees (North through East)
! Clean map  min=-0.0042697  max=0.090636 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo7-0.1]
quit
! Quitting program
! Log file 1820-274_X.log closed on Wed Oct 31 13:09:53 2007