[daip] forwarded message from Eric Greisen

[Eric Greisen]

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From: Eric Greisen <egreisen at nrao.edu>
To: cai hongbing <hbcai at shao.ac.cn>
Subject: Re: [daip] help,thanks
Date: Tue, 6 Dec 2005 14:52:05 -0700

Your data have a lot of problems - receivers warming up, rain, snow,
...

See

http://www.vlba.nrao.edu/astro/VOBS/astronomy/feb01/bs089/

I do not know why APCAL is aborting but it cannot work with the data I
found there.  Perhaps you can estimate receiver temps and opacities
from some of the good data and enter them by hand.  The fitting does
not work.  Perhaps do self-cal on the phase reference source and
transfer amp and phase gains to target source.  This does opacity et
al.


Eric Greisen
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