! Started logfile: 1657-261_S.log on Thu Jul 19 21:22:24 2007
observe 1657-261_S.edt
! Reading UV FITS file: 1657-261_S.edt
! AN table 1: 18 integrations on 171 of 171 possible baselines.
! AN table 2: 9 integrations on 171 of 171 possible baselines.
! AN table 3: 15 integrations on 171 of 171 possible baselines.
! AN table 4: 81 integrations on 171 of 171 possible baselines.
! Apparent sampling: 0.0948034 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1657-261
! Warning: Unknown AN-table MNTSTA value (3).
!          Will assume that it is ground-based.
! Warning: Unknown AN-table MNTSTA value (3).
!          Will assume that it is ground-based.
! Warning: Unknown AN-table MNTSTA value (3).
!          Will assume that it is ground-based.
! Warning: Unknown AN-table MNTSTA value (3).
!          Will assume that it is ground-based.
! 
! 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 1332 lines of history.
! 
! Reading 7976 visibilities.
![@gonzo5-0.4 1657-261_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 = 5.0
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 342 telescope corrections were flagged in sub-array 1.
!  A total of 171 telescope corrections were flagged in sub-array 2.
!  A total of 207 telescope corrections were flagged in sub-array 3.
!  A total of 1105 telescope corrections were flagged in sub-array 4.
! 
! Correcting IF 2.
!  A total of 342 telescope corrections were flagged in sub-array 1.
!  A total of 171 telescope corrections were flagged in sub-array 2.
!  A total of 201 telescope corrections were flagged in sub-array 3.
!  A total of 1088 telescope corrections were flagged in sub-array 4.
! 
! Correcting IF 3.
!  A total of 342 telescope corrections were flagged in sub-array 1.
!  A total of 171 telescope corrections were flagged in sub-array 2.
!  A total of 218 telescope corrections were flagged in sub-array 3.
!  A total of 1107 telescope corrections were flagged in sub-array 4.
! 
! Correcting IF 4.
!  A total of 342 telescope corrections were flagged in sub-array 1.
!  A total of 171 telescope corrections were flagged in sub-array 2.
!  A total of 226 telescope corrections were flagged in sub-array 3.
!  A total of 1159 telescope corrections were flagged in sub-array 4.
! 
! Fit before self-cal, rms=0.824462Jy  sigma=0.010799
! Fit after  self-cal, rms=0.824451Jy  sigma=0.010798
! 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=3.078 mas, bmaj=8.589 mas, bpa=-11.76 degrees
! Estimated noise=1811.96 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)
! Added new window around map position (0, 0).
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.136743 Jy
! Total flux subtracted in 50 components = 0.136743 Jy
! Clean residual min=-0.009573 max=0.038138 Jy/beam
! Clean residual mean=-0.000056 rms=0.002813 Jy/beam
! Combined flux in latest and established models = 0.136743 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 0.136743 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.081146Jy  sigma=0.001053
! Fit after  self-cal, rms=0.081146Jy  sigma=0.001053
! Inverting map 
! clean: niter=50  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.029818 Jy
! Total flux subtracted in 50 components = 0.029818 Jy
! Clean residual min=-0.006168 max=0.008316 Jy/beam
! Clean residual mean=-0.000033 rms=0.001709 Jy/beam
! Combined flux in latest and established models = 0.166561 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 0.166561 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.070598Jy  sigma=0.000923
! Fit after  self-cal, rms=0.070598Jy  sigma=0.000923
! 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=4.7 mas, bmaj=13.1 mas, bpa=-13.39 degrees
! Estimated noise=910.819 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 = 0.0101312 Jy
! Component: 100  -  total flux cleaned = 0.0146418 Jy
! Total flux subtracted in 100 components = 0.0146418 Jy
! Clean residual min=-0.004605 max=0.005987 Jy/beam
! Clean residual mean=-0.000060 rms=0.001442 Jy/beam
! Combined flux in latest and established models = 0.181202 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 31 model components to the UV plane model.
! The established model now contains 31 components and 0.181202 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.069316Jy  sigma=0.000908
! Fit after  self-cal, rms=0.069317Jy  sigma=0.000908
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Natural Weighting CLEAN ***"
! *** Finished Natural Weighting CLEAN *** 
print "****************************************"
! **************************************** 
gscale true
! Performing overall amplitude self-cal
! 
! Correcting IF 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  Telescope amplitude corrections in sub-array 2:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  Telescope amplitude corrections in sub-array 3:
!   BR        0.94     FD        1.13     GC        1.00*    GG        1.00*    
!   HN        1.00*    KP        0.89     LA        0.93     MA        1.00*    
!   MK        0.92     NL        1.00*    NY        1.00*    ON        1.00*    
!   OV        0.88     PT        1.00     SC        1.00*    TC        1.00*    
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
!  A total of 15 telescope corrections were flagged in sub-array 4.
!  Telescope amplitude corrections in sub-array 4:
!   BR        0.93     FD        1.14     GC        1.00*    GG        1.00*    
!   HN        0.99     KP        0.95     LA        1.01     MA        1.00*    
!   MK        1.00     NL        1.02     NY        1.00*    ON        1.00*    
!   OV        0.94     PT        1.03     SC        1.05     TC        1.00*    
!   TS        1.00*    WF        0.91     WZ        1.00*    
! 
! 
! Correcting IF 2.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  Telescope amplitude corrections in sub-array 2:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  A total of 3 telescope corrections were flagged in sub-array 3.
!  Telescope amplitude corrections in sub-array 3:
!   BR        0.90     FD        1.00     GC        1.00*    GG        1.00*    
!   HN        1.00*    KP        0.94     LA        1.04     MA        1.00*    
!   MK        1.22     NL        1.00*    NY        1.00*    ON        1.00*    
!   OV        1.10     PT        1.17     SC        1.00*    TC        1.00*    
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
!  A total of 24 telescope corrections were flagged in sub-array 4.
!  Telescope amplitude corrections in sub-array 4:
!   BR        0.99     FD        1.02     GC        1.00*    GG        1.00*    
!   HN        1.07     KP        1.02     LA        1.03     MA        1.00*    
!   MK        1.02     NL        1.06     NY        1.00*    ON        1.00*    
!   OV        1.01     PT        1.03     SC        0.97     TC        1.00*    
!   TS        1.00*    WF        0.88     WZ        1.00*    
! 
! 
! Correcting IF 3.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  Telescope amplitude corrections in sub-array 2:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  A total of 9 telescope corrections were flagged in sub-array 3.
!  Telescope amplitude corrections in sub-array 3:
!   BR        0.92     FD        0.94     GC        1.00*    GG        1.00*    
!   HN        1.00*    KP        0.94     LA        0.81     MA        1.00*    
!   MK        1.00     NL        1.00*    NY        1.00*    ON        1.00*    
!   OV        1.09     PT        1.05     SC        1.00*    TC        1.00*    
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
!  A total of 18 telescope corrections were flagged in sub-array 4.
!  Telescope amplitude corrections in sub-array 4:
!   BR        0.98     FD        0.96     GC        1.00*    GG        1.00*    
!   HN        1.06     KP        0.93     LA        0.93     MA        1.00*    
!   MK        1.00     NL        1.05     NY        1.00*    ON        1.00*    
!   OV        0.99     PT        1.05     SC        1.05     TC        1.00*    
!   TS        1.00*    WF        0.96     WZ        1.00*    
! 
! 
! Correcting IF 4.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  Telescope amplitude corrections in sub-array 2:
!   BR        0.00*    FD        0.00*    GC        0.00*    GG        0.00*    
!   HN        0.00*    KP        0.00*    LA        0.00*    MA        0.00*    
!   MK        0.00*    NL        0.00*    NY        0.00*    ON        0.00*    
!   OV        0.00*    PT        0.00*    SC        0.00*    TC        0.00*    
!   TS        0.00*    WF        0.00*    WZ        0.00*    
! 
!  A total of 15 telescope corrections were flagged in sub-array 3.
!  Telescope amplitude corrections in sub-array 3:
!   BR        1.16     FD        0.86     GC        1.00*    GG        1.00*    
!   HN        1.00*    KP        0.86     LA        1.00     MA        1.00*    
!   MK        1.35     NL        1.00*    NY        1.00*    ON        1.00*    
!   OV        1.22     PT        0.96     SC        1.00*    TC        1.00*    
!   TS        1.00*    WF        1.00*    WZ        1.00*    
! 
!  A total of 18 telescope corrections were flagged in sub-array 4.
!  Telescope amplitude corrections in sub-array 4:
!   BR        1.00*    FD        0.95     GC        1.00*    GG        1.00*    
!   HN        0.99     KP        0.97     LA        0.88     MA        1.00*    
!   MK        0.89     NL        1.02     NY        1.00*    ON        1.00*    
!   OV        0.90     PT        1.06     SC        0.95     TC        1.00*    
!   TS        1.00*    WF        0.94     WZ        1.00*    
! 
! 
! Fit before self-cal, rms=0.069317Jy  sigma=0.000908
! Fit after  self-cal, rms=0.067359Jy  sigma=0.000884
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=4.722 mas, bmaj=13.27 mas, bpa=-12.88 degrees
! Estimated noise=918.296 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 (-50, 90.4).
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.00492293 Jy
! Component: 100  -  total flux cleaned = 0.00597941 Jy
! Total flux subtracted in 100 components = 0.00597941 Jy
! Clean residual min=-0.004162 max=0.004014 Jy/beam
! Clean residual mean=-0.000037 rms=0.001075 Jy/beam
! Combined flux in latest and established models = 0.187182 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 54 components and 0.187182 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.067069Jy  sigma=0.000879
! Fit after  self-cal, rms=0.067066Jy  sigma=0.000878
! 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 = 0.000770643 Jy
! Component: 100  -  total flux cleaned = 0.00090481 Jy
! Total flux subtracted in 100 components = 0.00090481 Jy
! Clean residual min=-0.004074 max=0.003429 Jy/beam
! Clean residual mean=-0.000035 rms=0.001012 Jy/beam
! Combined flux in latest and established models = 0.188087 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 17 model components to the UV plane model.
! The established model now contains 66 components and 0.188087 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.066997Jy  sigma=0.000877
! Fit after  self-cal, rms=0.058650Jy  sigma=0.000744
! Inverting map and beam 
! Estimated beam: bmin=4.737 mas, bmaj=13.38 mas, bpa=-12.89 degrees
! Estimated noise=922.845 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 = -0.00163101 Jy
! Component: 100  -  total flux cleaned = -0.00178172 Jy
! Total flux subtracted in 100 components = -0.00178172 Jy
! Clean residual min=-0.002296 max=0.002009 Jy/beam
! Clean residual mean=0.000003 rms=0.000574 Jy/beam
! Combined flux in latest and established models = 0.186305 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 20 model components to the UV plane model.
! The established model now contains 85 components and 0.186305 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.058582Jy  sigma=0.000743
! Fit after  self-cal, rms=0.058604Jy  sigma=0.000743
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1657-261_S
! Writing UV FITS file: 1657-261_S.uvf
! Writing 85 model components to file: 1657-261_S.mod
! wwins: Wrote 2 windows to 1657-261_S.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 4.737 x 13.38 at -12.89 degrees (North through East)
! Clean map  min=-0.0022558  max=0.17527 Jy/beam
! Writing clean map to FITS file: 1657-261_S.fits
! Writing difmap environment to: 1657-261_S.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
![@gonzo_plot 1657-261_S]
device 1657-261_Suv.ps/vps,1,2
! Attempting to open device: '1657-261_Suv.ps/vps'
radplot
! Using default options string "m1"
uvplot
! Using default options string ""
device 1657-261_Sim.ps/vps
! Attempting to open device: '1657-261_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=4.737 mas, bmaj=13.38 mas, bpa=-12.89 degrees
! Estimated noise=922.845 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 4.737 x 13.38 at -12.89 degrees (North through East)
! Clean map  min=-0.0022558  max=0.17527 Jy/beam
![Exited script file: gonzo_plot]
![Exited script file: gonzo5-0.4]
quit
! Quitting program
! Log file 1657-261_S.log closed on Thu Jul 19 21:22:32 2007