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A wide range of different instruments is available for spectroscopic
- For low dispersion spectroscopy of faint objects, two versions
of the RGO-Durham Faint Object Spectrograph are available, on the
INT and WHT.
- For low to intermediate dispersion spectroscopy of bright
objects, the Richardson-Brealey spectrograph is available on
- Low dispersion slitless spectroscopy can be carried out using
grisms in the JKT CCD camera.
- For intermediate dispersion spectroscopy, the Intermediate
Dispersion Spectrograph on the INT, and ISIS on the WHT, are
available. These both offer a wide choice of gratings and
- The principal high dispersion instrument is the Utrecht
Echelle Spectrograph on the WHT. High dispersion spectroscopy
is also possible using Manchester Echelle Spectrograph on the INT
or WHT, although this is not currently
offered as a common user instrument, and its status must be checked
with its owner before an application is made.
- For multiple object spectrosopy, LDSS-II on the WHT gives high
throughput at low dispersions over a 12 arcmin square field of view
with a multi-slit system,
while the WHT prime focus facility (WYFFOS+Autofib2), due to be
commissioned in mid-1995 will provide intermediate resolutions (about
half ISIS resolution for the same grating), over a 40 arcmin to 1
degree diameter field with fibre feeds for up to 150 objects.
- Fabry-Perot imaging spectroscopy can be carried out using
TAURUS-2 on the WHT.
The rest of this chapter gives detailed descriptions of each of these
Tue Aug 15 16:42:46 BST 1995