Description
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AOT SWS06 allows the user to observe up to 64 wavelength ranges, with
SWS in the grating mode. The wavelength range(s) may be chosen
anywhere in the SWS grating range, i.e., between 2.38 and 45.2 
m,
under the restriction that each range falls within
one of the AOT bands (Tab. 
,
p. ).
The sum of the ranges chosen can cover the entire SWS wavelength range.
The spectrum is sampled in a flexible and fastest possible way.
Wavelength ranges are specified by giving the vacuum wavelengths of
beginning and end of each range, and the source's heliocentric radial
velocity . A specific wavelength within the desired
wavelength range is being referred to as the reference wavelength
of that
range. It is important that while selecting this wavelength one should avoid
lines and make sure that it is representative for the average
continuum flux density, rather than that it is close to the centre of
the wavelength range.
AOT SWS06 is executed the following way:
- The telescope is pointed to the target position.
- A measurement on the reference wavelength is being performed.
- The wavelength ranges specified in the AOT are observed. Each
range is scanned back and forth to provide redundancy.
- Dark current measurements are being performed only before and
after each wavelength range scan.
- Very long observations are interrupted by wavelength switching to
the reference wavelength, as an additional photometric check.
- A photometric check is performed, using the internal stimulators.
AOT SWS06 is used for a single observation of one target.
SWS Consortium
Tue Jul 30 15:56:20 MET DST 1996