! Started logfile: 1910+052_S.log on Tue May  4 13:06:21 1999
observe 1910+052_S.edt
! Reading UV FITS file: 1910+052_S.edt
! AN table 1: 106 integrations on 27 of 45 possible baselines.
! Apparent sampling: 0.398323 visibilities/baseline/integration-bin.
! *** This seems a bit low - see "help observe" on the binwid argument.
! Found source: 1910+052
! 
! 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 911 lines of history.
! 
! Reading 4560 visibilities.
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 624 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 586 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 716 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 676 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.880935Jy  sigma=3.506116
! Fit after  self-cal, rms=0.880053Jy  sigma=3.505651
! 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=2.524 mas, bmaj=4.346 mas, bpa=0.6215 degrees
! Estimated noise=6.82596 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 = 0.0897761 Jy
! Total flux subtracted in 50 components = 0.0897761 Jy
! Clean residual min=-0.016605 max=0.025039 Jy/beam
! Clean residual mean=0.000054 rms=0.005088 Jy/beam
! Combined flux in latest and established models = 0.0897761 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 0.0897761 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.118050Jy  sigma=0.468171
! Fit after  self-cal, rms=0.118050Jy  sigma=0.468170
! 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=2.833 mas, bmaj=4.782 mas, bpa=0.1193 degrees
! Estimated noise=3.10774 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 = 0.0337792 Jy
! Component: 100  -  total flux cleaned = 0.0534353 Jy
! Total flux subtracted in 100 components = 0.0534353 Jy
! Clean residual min=-0.022012 max=0.023176 Jy/beam
! Clean residual mean=0.000070 rms=0.006911 Jy/beam
! Combined flux in latest and established models = 0.143211 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 18 model components to the UV plane model.
! The established model now contains 18 components and 0.143211 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.108706Jy  sigma=0.430799
! Fit after  self-cal, rms=0.108664Jy  sigma=0.430624
! 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 153 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.99     FD        0.95     GC        0.92     HN        1.35     
!   KK        1.00*    KP        0.79     MC        0.93     MK        1.00*    
!   OV        1.00*    SC        1.22     
! 
! 
! Correcting IF 2.
!  A total of 63 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.07     FD        0.92     GC        0.95     HN        1.41     
!   KK        0.65     KP        0.80     MC        0.61     MK        0.90     
!   OV        1.40     SC        1.15     
! 
! 
! Correcting IF 3.
!  A total of 105 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        1.10     FD        0.85     GC        0.98     HN        1.33     
!   KK        1.00*    KP        0.70     MC        1.00*    MK        1.00*    
!   OV        1.00*    SC        1.25     
! 
! 
! Correcting IF 4.
!  A total of 141 telescope corrections were flagged in sub-array 1.
!  Telescope amplitude corrections in sub-array 1:
!   BR        0.95     FD        0.88     GC        0.85     HN        1.29     
!   KK        1.00*    KP        0.79     MC        0.89     MK        1.00*    
!   OV        1.00*    SC        1.17     
! 
! 
! Fit before self-cal, rms=0.108664Jy  sigma=0.430624
! Fit after  self-cal, rms=0.103509Jy  sigma=0.409552
dynam = dynam - 0.5
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=2.636 mas, bmaj=4.679 mas, bpa=0.2103 degrees
! Estimated noise=3.12678 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 = 0.00873194 Jy
! Component: 100  -  total flux cleaned = 0.0121306 Jy
! Total flux subtracted in 100 components = 0.0121306 Jy
! Clean residual min=-0.010664 max=0.018489 Jy/beam
! Clean residual mean=0.000026 rms=0.003324 Jy/beam
! Combined flux in latest and established models = 0.155342 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 9 model components to the UV plane model.
! The established model now contains 26 components and 0.155342 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.102861Jy  sigma=0.406011
! Fit after  self-cal, rms=0.103029Jy  sigma=0.405665
! 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)
! Added new window around map position (18.8, 37.2).
! clean: niter=100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.0144853 Jy
! Component: 100  -  total flux cleaned = 0.0183975 Jy
! Total flux subtracted in 100 components = 0.0183975 Jy
! Clean residual min=-0.008772 max=0.011219 Jy/beam
! Clean residual mean=0.000014 rms=0.002329 Jy/beam
! Combined flux in latest and established models = 0.17374 Jy
! Performing amp+phase self-cal over 1 minute time intervals
! Adding 13 model components to the UV plane model.
! The established model now contains 36 components and 0.17374 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.101188Jy  sigma=0.397340
! Fit after  self-cal, rms=0.102776Jy  sigma=0.390140
! Inverting map and beam 
! Estimated beam: bmin=2.58 mas, bmaj=4.668 mas, bpa=-0.5896 degrees
! Estimated noise=3.12093 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 = 0.00503785 Jy
! Component: 100  -  total flux cleaned = 0.00700859 Jy
! Total flux subtracted in 100 components = 0.00700859 Jy
! Clean residual min=-0.007193 max=0.008817 Jy/beam
! Clean residual mean=0.000012 rms=0.001806 Jy/beam
! Combined flux in latest and established models = 0.180748 Jy
! Performing phase self-cal over 0.6 minute time intervals
! Adding 11 model components to the UV plane model.
! The established model now contains 42 components and 0.180748 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Fit before self-cal, rms=0.102486Jy  sigma=0.388384
! Fit after  self-cal, rms=0.102499Jy  sigma=0.388128
! Inverting map 
print "***********************************"
! *********************************** 
print "*** Finished Amplitude Self-Cal ***"
! *** Finished Amplitude Self-Cal *** 
print "***********************************"
! *********************************** 
save 1910+052_S
! Writing UV FITS file: 1910+052_S.uvf
! Writing 42 model components to file: 1910+052_S.mod
! wwins: Wrote 2 windows to 1910+052_S.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 2.58 x 4.668 at -0.5896 degrees (North through East)
! Clean map  min=-0.0069545  max=0.11379 Jy/beam
! Writing clean map to FITS file: 1910+052_S.fits
! Writing difmap environment to: 1910+052_S.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
device 1910+052_Suv.ps/vps,1,2
! Attempting to open device: '1910+052_Suv.ps/vps'
radplot
! Using default options string "m1"
uvplot
device 1910+052_Sim.ps/vps
! Attempting to open device: '1910+052_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=2.58 mas, bmaj=4.668 mas, bpa=-0.5896 degrees
! Estimated noise=3.12093 mJy/beam.
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 2.58 x 4.668 at -0.5896 degrees (North through East)
! Clean map  min=-0.0069545  max=0.11379 Jy/beam
quit
! Quitting program
! Log file 1910+052_S.log closed on Tue May  4 13:07:43 1999