For the polarimetric modes the following parameters have to be specified. For PHT-P (AOT PHT50) additionally an APERTURE has to be chosen.
The first part of the parameter set is similar to that for multi-filter photometry (AOTs PHT03 and PHT22):
FILTER: select one filter for polarimetric measurements
APERTURE (for PHT50 only): select one aperture
POINT OR EXTENDED SOURCE: specification of source type; this
parameter defines whether the EXPECTED SOURCE FLUX is given in Jy or
MJy
STARING OR CHOPPING MODE: definition of the observing mode
if CHOPPING MODE is selected (see Sect. 3.1 and
6.2 for details):
CHOPPER THROW: angular separation (in arcsec) between target and
reference position
CHOPPER AVOIDANCE DIRECTION: direction to be avoided by the
chopper
FULL AVOIDANCE ANGLE: angular region to be avoided by the chopper
PEAKING UP REQUEST: for small apertures and high pointing
accuracies peaking-up on the source is necessary (see ISO OBSERVER'S
MANUAL)
EXPECTED SOURCE FLUX: best available estimate of source flux
(see Sect. 6.2)
UNCERTAINTY IN SOURCE FLUX: uncertainty of source flux estimate
MAXIMUM BACKGROUND FLUX: expected maximum background flux at source
position including all components (see Sect. 6.2)
INTEGRATION TIME PER POLARIZER or POLARIZATION ERROR: the
user specifies either the integration time for each polariser or the
required error in the measurement of the polarization degree (cf. Eq.
31)
EXPECTED POLARIZATION: (cf. Eq. 33)