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AOT SWS02 is optimized for sensitive observations of single lines in
the SWS grating mode. It allows the user to observe up to 64 individual
small wavelength intervals. A wavelength interval covers approximately
10 resolution elements, i.e., 3,000-1,500 km/s.
The central wavelength(s) of the intervals may be
chosen anywhere in the SWS range, i.e. between 2.38 and 45.2 
m.
A wavelength of a line is specified by giving its vacuum rest wavelength
and the source's heliocentric radial velocity .
AOT SWS02 is executed the following way:
- The telescope is pointed to the target position.
- A range of 10 resolution elements around each wavelength specified
in the AOT is observed. Each range is scanned back and forth to provide
redundancy. The minimal scan time is 100 seconds.
- Dark current measurements are being performed only before and
after the spectral scan .
- A photometric check is performed, using the internal stimulators.
At regular intervals, at least once per AOT, a photometric check is made.
AOT SWS02 is used for a single pointing on one target.
SWS Consortium
Wed Aug 7 17:20:29 MET DST 1996