[daip] IMAGR noise images
Eric W Greisen
egreisen at nrao.edu
Fri Oct 15 10:58:52 EDT 2010
Hans-Rainer Kloeckner wrote:
> Dear Eric et al.,
>
> sorry again for bothering, is there an option to obtain in imagr
> the "cleaned" noise floor without the sources added back onto the
> image, but an attached CC table? The reason for this question is that
> we would like to generate a very large survey from several pointing
> and we would like to add the sources back with an optional synthesized
> beam size. Or do you see a way to bootstrap this ?
>
> cheers,
>
> Hans
>
> --------------------------------------------------------
> Hans-Rainer Kloeckner
> --------------------------------------------------------
> University of Oxford
> Denys Wilkinson Building
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> Oxford OX1 3RH
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> hrk at astro.ox.ac.uk
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> hrk at mpifr-bonn.mpg.de
> --------------------------------------------------------
>
>
>
>
>
>
>
>
There are 2 approaches - if you set BMAJ < 0, IMAGR will leave you with
a residual image
plus the CC file. There is also the task CCRES which will let you
remove one set of CCs
and put in another - e.g. to change the resolution. IMAGR can always be
restarted and told
to make a residual or normal image almost immediately after the restart
as well. CCRES
may not play well with multi-scale imaging.
Eric Greisen
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