[daip] [Fwd: DBCON/IMAGR question]

[Hanno Spreeuw]

Sorry, please disregard this, I saw that the IMAGR message file shows 
the "Sum of gridding weights" at some later point.
Hanno.

-------- Original Message --------
Subject: DBCON/IMAGR question
Date: Thu, 03 Jan 2008 12:25:04 +0100
From: Hanno Spreeuw <spreeuw at astron.nl>
To: daip at nrao.edu

Hello, I am trying to determine the correct value for REWEIGHT in DBCON.
I read the DBCON helpfile: 'All AIPS imaging tasks report the "sum of
the gridding weights" in the message file'.
So I ran IMAGR on one of the input datasets for DBCON. This is part of
the message file:
"castor> IMAGR1: UVWAIT: begin finding uniform weights
castor> IMAGR1: UVWAIT: Average grid weight  2.088E+00
castor> IMAGR1: UVWAIT: Adding temperance S  4.175E-01
castor> IMAGR1: UVWAIT: begin applying uniform or other weights
castor> IMAGR1: UVWAIT: Sum of weights in  2.413E+02 and out  3.411E+02
castor> IMAGR1: UVWAIT: Noise is increased by a factor 1.172 due to
weighting
castor> IMAGR1: UVWAIT: Average summed weight  2.088E+00 over     193179
vis".
I guess I should pick either the first (2.413E+02) or the second
(3.411E+02) number.
But I am not sure how to interpret "in" and "out" in this line
"Sum of weights in  2.413E+02 and out  3.411E+02".
Could you please explain?

Thanks,
Hanno Spreeuw.