William Herschel
Telescope
Hitch-hiker Camera
First light: November
1990
De-commissioned:
Designed and built by:
University of Wales College of Cardiff, the Institute of Astronomy, Cambridge
and the University of Durham, developed with the support of an SERC grant
and the aid of the RGO.
Description: The instrument
is a dual CCD camera mounted inside the Cassegrain A&G Unit which is
designed to work off-axis, in parallel with on-axis WHT Cassegrain instruments
such as ISIS and TAURUS. In each exposure it images a 6×4 arc minute
field in two colours. The field is offset by 6.8 arcminutes from the optical
axis, which leaves on-axis observations unvignetted.
Some scientific highlights:
More information: S Driver, 1991, "First Parallel Observations on the
WHT", Gemini Newsletter, 31, 15.
More photos of this instrument: http://www.ing.iac.es/PR/archive/wht/instruments.html
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