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William Herschel Telescope

FLEX: Fiber Linked Experimental

First light: 1988.

Designed and built by: Instituto de Astrofisica de Canarias.

Description: FLEX is a grating spectrograph specially suited to fiber work. It offers many optical configurations. One of them is a reflective configuration, in which the camera has a Cassegrain-Mastukov design working at f/2.2 (f = 197 mm). The secondary mirror of the camera has a diameter of 50 mm, giving a central obstruction of 33%. In this case, a set of three different parabolic mirrors, all of them with a diameter of 100 mm and working aproximately at f/4, f/6 and f/8, can be used as collimators. The other configuration is refractive and uses a large field lenses /f/6.3, f = 508 mm) as collimator and the TAURUS II camera (f/2, f = 128 mm).

FLEX can be placed on one of the Nasmyth platforms of the WHT. 

FLEX impact:

Publications.



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Last modified: 25 May 2020