V2M maps before and after PIMA upgrade 2012.10.01
Fixing a bug in computing scan-averaged visibilities for
sources that have significant errors in a priori positions
(more > 0".5)
PIMA prior 20121001 incorrectly averaged visibilities
when a correction for quadratic term in phase that arises
when a priori source postions used for correlation had
significant errors has been applied. This error went undetected
though testing using RDV data, because these experiments had
a priori source positions known to mas level.
Here are results of image processing using new version of PIMA
and old version (prior October 2012).
Combining visibilities from two epochs
A new feature was introduced in PIMA 20121001: the capability
to merge visibilities from two or more experiments and then
process combined visibilities with difmap.
Back to Leonid Petrov's discussion page.
Last update: 2012.10.12_21:22:10
