! Started logfile: 2252-089_U.log on Wed Nov 20 14:10:51 1996
observe 2252-089_U.edt
! Reading UV FITS file: 2252-089_U.edt
! AN table 1: 10 integrations on 21 of 21 possible baselines.
! Apparent sampling: 0.857143 visibilities/baseline/integration-bin.
! Found source: 2252-089
! 
! Number of spectral-line channels: 1
! 
! IF    Freq (Hz)  Chan BW (Hz)  Full BW (Hz)  Sideband
! 01  1.49105e+10         8e+06         8e+06       USB
! 02  1.49205e+10         8e+06         8e+06       USB
! 03  1.49505e+10         8e+06         8e+06       USB
! 04  1.50105e+10         8e+06         8e+06       USB
! 05  1.51205e+10         8e+06         8e+06       USB
! 06  1.52005e+10         8e+06         8e+06       USB
! 07  1.52505e+10         8e+06         8e+06       USB
! 08  1.52705e+10         8e+06         8e+06       USB
! 
! Polarization(s): RR
! 
! Read 565 lines of history.
! 
! Reading 1440 visibilities.
! Selecting polarization: RR,  channels: 1..1
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 = -100
float clean_gain
clean_gain = 0.03
float dynam
dynam = 4.0
float win_mult
win_mult = 1.5
float solint
solint = 4.0/6.0
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.
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 26 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 2.
!  A total of 26 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 3.
!  A total of 33 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 4.
!  A total of 30 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 5.
!  A total of 15 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 6.
!  A total of 15 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 7.
!  A total of 30 telescope corrections were flagged in sub-array 1.
! 
! Correcting IF 8.
!  A total of 42 telescope corrections were flagged in sub-array 1.
! 
! Fit before self-cal, rms=0.808568Jy  sigma=4.968981
! Fit after  self-cal, rms=0.808237Jy  sigma=4.970341
! 
! Reinstating the default IF.
! 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=0.9298 mas, bmaj=1.364 mas, bpa=-21.6 degrees
! Estimated noise=6.3826 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=-100  gain=0.03  cutoff=0
! Component: 050  -  total flux cleaned = 0.167192 Jy
! Clean halted at first negative component
! Total flux subtracted in 78 components = 0.19403 Jy
! Clean residual min=-0.032121 max=0.027773 Jy/beam
! Clean residual mean=-0.000062 rms=0.009098 Jy/beam
! Combined flux in latest and established models = 0.19403 Jy
! Performing phase self-cal over 0.666667 minute time intervals
! Adding 3 model components to the UV plane model.
! The established model now contains 3 components and 0.19403 Jy
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Correcting IF 5.
! 
! Correcting IF 6.
! 
! Correcting IF 7.
! 
! Correcting IF 8.
! 
! Fit before self-cal, rms=0.123211Jy  sigma=0.755778
! Fit after  self-cal, rms=0.123191Jy  sigma=0.755657
! 
! Reinstating the default IF.
! 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 * 1.3
clean_niter = clean_niter * 2
dynam = dynam - 1.0
doamp = false
flux_cutoff = imstat(rms) * dynam
! Inverting map and beam 
! Estimated beam: bmin=1.076 mas, bmaj=1.506 mas, bpa=-10 degrees
! Estimated noise=3.90169 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=-200  gain=0.03  cutoff=0
! Clean halted at first negative component
! Total flux subtracted in 0 components = 0 Jy
! Clean residual min=-0.021296 max=0.020606 Jy/beam
! Clean residual mean=-0.000134 rms=0.005567 Jy/beam
! Combined flux in latest and established models = 0.19403 Jy
! Performing phase self-cal over 0.666667 minute time intervals
! 
! Correcting IF 1.
! 
! Correcting IF 2.
! 
! Correcting IF 3.
! 
! Correcting IF 4.
! 
! Correcting IF 5.
! 
! Correcting IF 6.
! 
! Correcting IF 7.
! 
! Correcting IF 8.
! 
! Fit before self-cal, rms=0.123191Jy  sigma=0.755657
! Fit after  self-cal, rms=0.123191Jy  sigma=0.755658
! 
! Reinstating the default IF.
! Inverting map 
print "****************************************"
! **************************************** 
print "*** Finished Natural Weighting CLEAN ***"
! *** Finished Natural Weighting CLEAN *** 
print "****************************************"
! **************************************** 
save 2252-089_U
! Writing UV FITS file: 2252-089_U.uvf
! Writing 3 model components to file: 2252-089_U.mod
! wwins: Wrote 1 windows to 2252-089_U.win
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.076 x 1.506 at -10 degrees (North through East)
! Clean map  min=-0.020822  max=0.20103 Jy/beam
! Writing clean map to FITS file: 2252-089_U.fits
! Writing difmap environment to: 2252-089_U.par
print "****************************"
! **************************** 
print "*** Now, make some plots ***"
! *** Now, make some plots *** 
print "****************************"
! **************************** 
device 2252-089_Uuv.ps/vps,1,2
! Attempting to open device: '2252-089_Uuv.ps/vps'
radplot
! Using default options string "m1"
uvplot
device 2252-089_Uim.ps/vps
! Attempting to open device: '2252-089_Uim.ps/vps'
cmul = 1.0
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 (imstat(rms)*3),20000,2
! Inverting map and beam 
! Estimated beam: bmin=1.076 mas, bmaj=1.506 mas, bpa=-10 degrees
! Estimated noise=3.90169 mJy/beam.
! The new contour levels are:
!  -0.016702 0.016702 0.0334039 0.0668078 0.133616 0.267231 0.534463 1.06893 2.13785 4.2757 8.5514 17.1028 34.2056 68.4112 136.822 273.645 547.29 1094.58 2189.16 4378.32 8756.63 17513.3
mappl cln
! restore: Substituting estimate of restoring beam from last 'invert'.
! Restoring with beam: 1.076 x 1.506 at -10 degrees (North through East)
! Clean map  min=-0.020822  max=0.20103 Jy/beam
quit
! Quitting program
! Log file 2252-089_U.log closed on Wed Nov 20 14:11:36 1996