! Started logfile: 1726+455_S.log on Wed May  7 12:33:10 2008
observe 1726+455_S.edt
! Reading UV FITS file: 1726+455_S.edt
! AN table 1: 35 integrations on 153 of 153 possible baselines.
! Apparent sampling: 0.188982 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1726+455
! 
! 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  2.22497e+09        8e+06          1        8e+06
!  02        2  2.24497e+09        8e+06          1        8e+06
!  03        3  2.33497e+09        8e+06          1        8e+06
!  04        4  2.36497e+09        8e+06          1        8e+06
! 
! Polarization(s): RR
! 
! Read 955 lines of history.
! 
! Reading 4048 visibilities.
![@gonzo7-0.4 1726+455_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 436 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 455 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 431 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 448 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.350377Jy  sigma=0.003719
! Fit after  self-cal, rms=0.346242Jy  sigma=0.003700
! 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=2.203 mas, bmaj=3.716 mas, bpa=56.25 degrees
! Estimated noise=2091.12 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 = 0.520442 Jy
! Total flux subtracted in 50 components = 0.520442 Jy
! Clean residual min=-0.033150 max=0.148252 Jy/beam
! Clean residual mean=0.000037 rms=0.011617 Jy/beam
! Combined flux in latest and established models = 0.520442 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 0.520442 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.226370Jy  sigma=0.002935
! Fit after  self-cal, rms=0.226356Jy  sigma=0.002934
! Inverting map 
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.143408 Jy
! Total flux subtracted in 50 components = 0.143408 Jy
! Clean residual min=-0.019359 max=0.056328 Jy/beam
! Clean residual mean=-0.000027 rms=0.005683 Jy/beam
! Combined flux in latest and established models = 0.663849 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 4 model components to the UV plane model.
! The established model now contains 5 components and 0.663849 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.138804Jy  sigma=0.001692
! Fit after  self-cal, rms=0.138775Jy  sigma=0.001692
! Inverting map 
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.0557917 Jy
! Total flux subtracted in 50 components = 0.0557917 Jy
! Clean residual min=-0.017377 max=0.023094 Jy/beam
! Clean residual mean=-0.000052 rms=0.004028 Jy/beam
! Combined flux in latest and established models = 0.719641 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 10 components and 0.719641 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.118754Jy  sigma=0.001369
! Fit after  self-cal, rms=0.118734Jy  sigma=0.001369
! 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=2.635 mas, bmaj=4.323 mas, bpa=66.79 degrees
! Estimated noise=1291.34 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 = 0.0351468 Jy
! Component: 100  -  total flux cleaned = 0.0533636 Jy
! Total flux subtracted in 100 components = 0.0533636 Jy
! Clean residual min=-0.015470 max=0.016019 Jy/beam
! Clean residual mean=-0.000125 rms=0.003634 Jy/beam
! Combined flux in latest and established models = 0.773005 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 33 components and 0.773005 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.110959Jy  sigma=0.001229
! Fit after  self-cal, rms=0.110890Jy  sigma=0.001229
! 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 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.98     FD        1.08     GC        0.98     HH        1.00*    
!   HN        0.96     KK        0.96     KP        0.95     LA        0.99     
!   MC        1.00*    MK        1.01     NL        0.97     NY        0.96     
!   ON        1.01     OV        0.95     PT        1.02     SC        1.00*    
!   WF        1.10     WZ        1.12     
! 
! 
! Correcting IF 2.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.00     FD        1.03     GC        1.01     HH        1.00*    
!   HN        1.03     KK        0.99     KP        0.99     LA        0.98     
!   MC        1.00*    MK        1.04     NL        0.97     NY        0.98     
!   ON        0.88     OV        0.94     PT        0.99     SC        1.00*    
!   WF        1.10     WZ        1.02     
! 
! 
! Correcting IF 3.
!  A total of 12 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.99     FD        1.07     GC        0.98     HH        1.00*    
!   HN        1.11     KK        0.99     KP        0.98     LA        0.96     
!   MC        1.00*    MK        0.99     NL        1.01     NY        1.02     
!   ON        1.09     OV        0.96     PT        1.01     SC        1.00*    
!   WF        1.14     WZ        1.10     
! 
! 
! Correcting IF 4.
!  A total of 3 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.01     FD        0.97     GC        1.03     HH        1.00*    
!   HN        1.10     KK        1.03     KP        1.02     LA        1.00*    
!   MC        1.00*    MK        0.96     NL        1.02     NY        1.04     
!   ON        1.09     OV        0.85     PT        1.03     SC        1.00*    
!   WF        1.20     WZ        1.08     
! 
! 
! Fit before self-cal, rms=0.110890Jy  sigma=0.001229
! Fit after  self-cal, rms=0.103053Jy  sigma=0.001074
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=2.664 mas, bmaj=4.343 mas, bpa=67.52 degrees
! Estimated noise=1289.7 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 (-7.6, -4.8).
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.0111265 Jy
! Component: 100  -  total flux cleaned = 0.0156888 Jy
! Total flux subtracted in 100 components = 0.0156888 Jy
! Clean residual min=-0.007505 max=0.005806 Jy/beam
! Clean residual mean=0.000150 rms=0.001550 Jy/beam
! Combined flux in latest and established models = 0.788693 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 12 model components to the UV plane model.
! The established model now contains 44 components and 0.788693 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.101885Jy  sigma=0.001059
! Fit after  self-cal, rms=0.101832Jy  sigma=0.001058
! 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 = 0.00295117 Jy
! Component: 100  -  total flux cleaned = 0.00325314 Jy
! Total flux subtracted in 100 components = 0.00325314 Jy
! Clean residual min=-0.007238 max=0.005658 Jy/beam
! Clean residual mean=0.000147 rms=0.001465 Jy/beam
! Combined flux in latest and established models = 0.791947 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 15 model components to the UV plane model.
! The established model now contains 55 components and 0.791947 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.101513Jy  sigma=0.001054
! Fit after  self-cal, rms=0.099455Jy  sigma=0.001023
! Inverting map and beam 
! Estimated beam: bmin=2.667 mas, bmaj=4.344 mas, bpa=67.62 degrees
! Estimated noise=1292.49 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 = 0.00255598 Jy
! Component: 100  -  total flux cleaned = 0.00243813 Jy
! Total flux subtracted in 100 components = 0.00243813 Jy
! Clean residual min=-0.006292 max=0.005082 Jy/beam
! Clean residual mean=0.000139 rms=0.001335 Jy/beam
! Combined flux in latest and established models = 0.794385 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 64 components and 0.794385 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.099274Jy  sigma=0.001022
! Fit after  self-cal, rms=0.099264Jy  sigma=0.001021
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1726+455_S
! Writing UV FITS file: 1726+455_S.uvf
! Writing 64 model components to file: 1726+455_S.mod
! wwins: Wrote 2 windows to 1726+455_S.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 2.667 x 4.344 at 67.62 degrees (North through East)
! Clean map  min=-0.0061591  max=0.69099 Jy/beam
! Writing clean map to FITS file: 1726+455_S.fits
! Writing difmap environment to: 1726+455_S.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1726+455_S]
device 1726+455_Suv.ps/vps,1,2
! Attempting to open device: '1726+455_Suv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1726+455_Sim.ps/vps
! Attempting to open device: '1726+455_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=2.667 mas, bmaj=4.344 mas, bpa=67.62 degrees
! Estimated noise=1292.49 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 2.667 x 4.344 at 67.62 degrees (North through East)
! Clean map  min=-0.0061591  max=0.69099 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo7-0.4]
quit
! Quitting program
! Log file 1726+455_S.log closed on Wed May  7 12:33:14 2008