To smooth (in miriad):

1) task convol; in = *.clean.restor; out = *.clean.restor.convol; fwhm = 2*fwhm, 2*fwhm; options=final

2) hanning smooth in velocity space

- task hanning; in = *.clean.restor.convol; out = *.clean.restor.convol.hanning; width=3

3) use 2*(sigma in convol) to blank in maths:

- task maths; exp = <*.clean.restor.convol.hanning>; mask = <*.clean.restor.convol.hanning>.gt.0.0001; out = *.mask

5) get a region for channel maps to clean again with cgcurs

- open the *.mask in kvis

- task cgcurs; in=*.mask; type=pix; device=/xwin; range = 0,0.001, device=/xwin; nxy=1; options=region

this will output a cgcurs.region file. Now we need to make a mask:

6) immask

task immask

in=*.mask

region=@cgcurs.region

logic=and

flag=true

-- AdrienneStilp - 2009-02-25