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The SPECTROSCOPIC section is revised as follows:
- from the first copy of all the input header of
into
, the spectroscopic section inherits the
values, in particular the rest and image frequencies.
- the number of channels is set to the appropriate value
(according to the COMPOSITE or INTERSECT mode)
computed at section 3.2.
Then, depending on the alignment rule, another set of values can be
set:
- in case of channel alignment (SET ALIGN CHANNEL), no more
values of this section are redefined.
- in case of frequency alignment (SET ALIGN FREQUENCY), the
frequency and associated velocity parameters are set:
- the output frequency resolution
is set to the value computed
at Eq. 1,
- the output frequency offset
is set to
,
- the reference channel associated to
is set
to
where
is the
frequency value at channel
5,
computed at Eq. 7,
- then the velocity resolution
is set to
where
is the speed of
light and
the rest frequency,
- and the velocity offset
is
set to
- in case of velocity alignment SET ALIGN VELOCITY, the
velocity and associated frequency parameters are set to:
- the output velocity resolution
is set to the value computed
at Eq. 1,
- the output velocity offset
6 is set to
,
- the reference channel is set to
where
is the velocity value at channel
, computed at Eq. 7,
- then the frequency resolution
is set to
,
- and the frequency offset
is
set to
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Gildas manager
2011-04-01