AIPS HELP file for SPECTRAL in 31DEC22
As of Wed Dec 8 9:04:11 2021
Use: To tell a task whether it should do some operation in a spectral
chsnnel-dependent fashion or in a channel-independent fashion.
SPECTRAL > 0 => channel-dependent methods hould be used.
Default: <= 0 => False => do continuum methods
> 0 => True => do spectral methods
PCAL......Computes antenna-based polarization leakage terms and,
optionally, also determines source polarization (Q, U, V).
SPECTRAL false selects the familiar IF dependent solution
which is stored in the antenna and source tables.
SPECTRAL true selects a channel-dependent solution which
is stored in PD (leakage) and PS (source) tables whic
resemble bandpass tables.
RLDIF.....Determines Right minus Left phase difference, corrects
TRUEP.....Determines true antenna polarization from special data
XYDIF.....Find/apply X minus Y linear polarization phase difference