- CASA issues The
casagildas() may be missing in CASA or
may produce strange results when it is not uptodate. To create or update it, two steps are needed.
1) in IMAGER, use command casa /update
2) Start CASA again to use the updated
casagildas() tool.
- discovered 17-Jul-2024 CASA can produce UV tables with
considerable frequency shifts when merging observations made apart
due to Doppler tracking handling by CASA. Unfortunately it does not produce by default
the intersection of the spectral coverage, but the union. This leaves
data with very widely different weights, sometimes even 0, that are
poorly handled by the
PIPELINE.
A script to trim off these incomplete band edges is provided
in case this happens:
@ uv_trim-edges. It will be implemented
in the
PIPELINE ORGANIZE step at some stage.
- confirmed 04-Jan-2023
CLEAN may stop with 0 iterations if it
already did so because of improper input parameters, even after resetting
the parameters. Probably a missing initialization of some Logical variable.
This is most likely because of an invalid
MASK. Using
DISCARD MASK
should solve the issue. If it does not, the only work-around so far is to restart
IMAGER.
- You may need to remove your
$HOME/.gag/*.html files to
access to the latest HTML documentation in a consistent way. Links may be broken
otherwise.
-
VIEW CCT on data cubes may cause occasional crashes.
The origin of the bug is most likely related to the pencil colour handling
in the graphic library, but yet unidentified.
This bug seems to have almost disappeared in more recent versions...
