Month: April 2024

Bug corrected in the distributed version 4.0 (and beyond):

PIPELINE /MODE SURVEY was not working properly when strong lines were present in spectral window, because line subtracting was improperly done, and contaminated the full bandwidth.

Note that the PIPELINE /MODE ALL with NO Catalog was is similarly affected, whereas other modes (including PIPELINE /MODE ALL with a Catalog) were not affected by this issue.

Bug corrected in the distributed version 4.0 (and beyond):

Description: PIPELINE crashes (in Survey mode): Continuum image could not be created.

This was due to incorrect channel flagging when a strong/broad line is present close to the edge of a frequency band. In some cases, too many (if not all) channels were flagged, resulting in no continuum channels.

Recommandation: you may test first the line identification with the UV_PREVIEW command before starting the imaging process with the PIPELINE (adjusting TAPER, SMOOTH and CLIP variables may help, if the problem persists in exotic cases).