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Integral light mode

Two 100 $\mu$m fibers are 2mm=28arcsec separated to easily accept the ordinary and extraordinary beams emerging from the polarisation analyser, see next section. A part for the polarimetric mode, the second fiber is available to record the sky spectrum simultaneously to the star spectrum.

Resolution with 100 $\mu$m fibers is 28000. Higher values are obtaind using a set of slits. Presently we forsee four motorised slits giving the resolution: 45000 (62 $\mu$m) and 63000 (44 $\mu$m).



Innocenza Busa' 2005-11-14