clean(vis="ngc5921_src.split.ms",imagename="ngc5921_task",mode="velocity",alg="hogbom",niter=6000,gain=0.1,threshold=8.0 , mask="",cleanbox=[],nchan=38,start="1595km/s",width=1,step="-5.5km/s",imsize=[256, 256],cell=[15.0, 15.0],stokes="I",field="0",spw="",weighting="briggs",rmode="norm",robust=0.5)

invert(vis='ngc5921_src.split.ms',imagename='ngc5921_invert',
      mode='velocity',
      nchan=38,start='1595km/s',step='-5.5km/s',
      field='0',imsize=[256,256],cell=[15.,15.],
      weighting='briggs',rmode='norm',robust=0.5)

deconvolve(imagename="ngc5921_invert.dirty",model="ngc5921_decon",psf="ngc5921_invert.beam",alg="hogbom",niter=6000,gain=0.1,threshold="8.0mJy")


clean(vis="ngc5921_src.split.ms",imagename="ngc5921_freq",mode="frequency",alg="clark",niter=6000,gain=0.1,threshold=8.0 , mask="",cleanbox=[],nchan=40,start="1.412849GHz",width=1,step="26kHz",imsize=[256, 256],cell=[15.0, 15.0],stokes="I",field="0",spw="",weighting="briggs",rmode="norm",robust=0.5)

clean(vis="ngc5921_src.split.ms",imagename="ngc5921_inter",mode="velocity",alg="hogbom",niter=6000,gain=0.1,threshold=8.0 , mask="",cleanbox='interactive',nchan=38,start="1595km/s",width=1,step="-5.5km/s",imsize=[256, 256],cell=[15.0, 15.0],stokes="I",field="0",spw="",weighting="briggs",rmode="norm",robust=0.5)